1339637997 has 32 divisors (see below), whose sum is σ = 1924249600. Its totient is φ = 826495488.

The previous prime is 1339637987. The next prime is 1339638007. The reversal of 1339637997 is 7997369331.

It is an interprime number because it is at equal distance from previous prime (1339637987) and next prime (1339638007).

It is not a de Polignac number, because 1339637997 - 2¹⁰ = 1339636973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339637917) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 435258 + ... + 438324.

It is an arithmetic number, because the mean of its divisors is an integer number (60132800).

Almost surely, 2^1339637997 is an apocalyptic number.

It is an amenable number.

1339637997 is a deficient number, since it is larger than the sum of its proper divisors (584611603).

1339637997 is a wasteful number, since it uses less digits than its factorization.

1339637997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265.

The product of its digits is 5786802, while the sum is 57.

The square root of 1339637997 is about 36601.0655172770. The cubic root of 1339637997 is about 1102.3744841967.

The spelling of 1339637997 in words is "one billion, three hundred thirty-nine million, six hundred thirty-seven thousand, nine hundred ninety-seven".