1339630740 has 144 divisors (see below), whose sum is σ = 4658314752. Its totient is φ = 305261568.

The previous prime is 1339630717. The next prime is 1339630781. The reversal of 1339630740 is 470369331.

1339630740 is a `hidden beast` number, since 13 + 3 + 9 + 630 + 7 + 4 + 0 = 666.

It is a super-2 number, since 2×1339630740² = 3589221039105895200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1339630695 and 1339630704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 460972 + ... + 463868.

It is an arithmetic number, because the mean of its divisors is an integer number (32349408).

Almost surely, 2^1339630740 is an apocalyptic number.

1339630740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1339630740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2329157376).

1339630740 is an abundant number, since it is smaller than the sum of its proper divisors (3318684012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1339630740 is a wasteful number, since it uses less digits than its factorization.

1339630740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286 (or 3281 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The square root of 1339630740 is about 36600.9663806845. The cubic root of 1339630740 is about 1102.3724936226.

The spelling of 1339630740 in words is "one billion, three hundred thirty-nine million, six hundred thirty thousand, seven hundred forty".