16039957 has 2 divisors, whose sum is σ = 16039958. Its totient is φ = 16039956.

The previous prime is 16039921. The next prime is 16039963. The reversal of 16039957 is 75993061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15100996 + 938961 = 3886^2 + 969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16039957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16039757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8019978 + 8019979.

It is an arithmetic number, because the mean of its divisors is an integer number (8019979).

Almost surely, 2^16039957 is an apocalyptic number.

It is an amenable number.

16039957 is a deficient number, since it is larger than the sum of its proper divisors (1).

16039957 is an equidigital number, since it uses as much as digits as its factorization.

16039957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 16039957 is about 4004.9915106027. The cubic root of 16039957 is about 252.1937967136.

The spelling of 16039957 in words is "sixteen million, thirty-nine thousand, nine hundred fifty-seven".