16312949 has 2 divisors, whose sum is σ = 16312950. Its totient is φ = 16312948.

The previous prime is 16312937. The next prime is 16312973. The reversal of 16312949 is 94921361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15760900 + 552049 = 3970^2 + 743^2 .

It is a cyclic number.

It is not a de Polignac number, because 16312949 - 2⁸ = 16312693 is a prime.

It is a super-2 number, since 2×16312949² = 532224610153202, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16312909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8156474 + 8156475.

It is an arithmetic number, because the mean of its divisors is an integer number (8156475).

Almost surely, 2^16312949 is an apocalyptic number.

It is an amenable number.

16312949 is a deficient number, since it is larger than the sum of its proper divisors (1).

16312949 is an equidigital number, since it uses as much as digits as its factorization.

16312949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 16312949 is about 4038.9291897730. The cubic root of 16312949 is about 253.6164929798.

The spelling of 16312949 in words is "sixteen million, three hundred twelve thousand, nine hundred forty-nine".