1359609940 has 24 divisors (see below), whose sum is σ = 3074810760. Its totient is φ = 502009728.

The previous prime is 1359609913. The next prime is 1359609943. The reversal of 1359609940 is 499069531.

It can be written as a sum of positive squares in 4 ways, for example, as 47141956 + 1312467984 = 6866^2 + 36228^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1359609943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2614375 + ... + 2614894.

It is an arithmetic number, because the mean of its divisors is an integer number (128117115).

Almost surely, 2^1359609940 is an apocalyptic number.

1359609940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1359609940 is an abundant number, since it is smaller than the sum of its proper divisors (1715200820).

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

1359609940 is a wasteful number, since it uses less digits than its factorization.

1359609940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229291 (or 5229289 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 1359609940 is about 36872.8889565220. Note that the first 3 decimals coincide. The cubic root of 1359609940 is about 1107.8257196984.

The spelling of 1359609940 in words is "one billion, three hundred fifty-nine million, six hundred nine thousand, nine hundred forty".