16653929 has 2 divisors, whose sum is σ = 16653930. Its totient is φ = 16653928.

The previous prime is 16653919. The next prime is 16653953. The reversal of 16653929 is 92935661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16418704 + 235225 = 4052^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 16653929 - 2²⁰ = 15605353 is a prime.

It is a super-2 number, since 2×16653929² = 554706702274082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16653919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8326964 + 8326965.

It is an arithmetic number, because the mean of its divisors is an integer number (8326965).

Almost surely, 2^16653929 is an apocalyptic number.

It is an amenable number.

16653929 is a deficient number, since it is larger than the sum of its proper divisors (1).

16653929 is an equidigital number, since it uses as much as digits as its factorization.

16653929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 41.

The square root of 16653929 is about 4080.9225672634. The cubic root of 16653929 is about 255.3713875857.

The spelling of 16653929 in words is "sixteen million, six hundred fifty-three thousand, nine hundred twenty-nine".