389953537 has 4 divisors (see below), whose sum is σ = 390003120. Its totient is φ = 389903956.

The previous prime is 389953457. The next prime is 389953609. The reversal of 389953537 is 735359983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389953537 is a prime.

It is a super-2 number, since 2×389953537² = 304127522037620738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389953237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10087 + ... + 29692.

It is an arithmetic number, because the mean of its divisors is an integer number (97500780).

Almost surely, 2^389953537 is an apocalyptic number.

It is an amenable number.

389953537 is a deficient number, since it is larger than the sum of its proper divisors (49583).

389953537 is an equidigital number, since it uses as much as digits as its factorization.

389953537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49582.

The product of its digits is 3061800, while the sum is 52.

The square root of 389953537 is about 19747.2412503620. The cubic root of 389953537 is about 730.5853421216.

The spelling of 389953537 in words is "three hundred eighty-nine million, nine hundred fifty-three thousand, five hundred thirty-seven".