1390829520 has 40 divisors (see below), whose sum is σ = 4311572256. Its totient is φ = 370887808.

The previous prime is 1390829513. The next prime is 1390829533. The reversal of 1390829520 is 259280931.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2897322 + ... + 2897801.

Almost surely, 2^1390829520 is an apocalyptic number.

1390829520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1390829520 is an abundant number, since it is smaller than the sum of its proper divisors (2920742736).

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

1390829520 is a wasteful number, since it uses less digits than its factorization.

1390829520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5795139 (or 5795133 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1390829520 is about 37293.8268350139. The cubic root of 1390829520 is about 1116.2409905946.

The spelling of 1390829520 in words is "one billion, three hundred ninety million, eight hundred twenty-nine thousand, five hundred twenty".