331392949 has 2 divisors, whose sum is σ = 331392950. Its totient is φ = 331392948.

The previous prime is 331392923. The next prime is 331392961. The reversal of 331392949 is 949293133.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256224049 + 75168900 = 16007^2 + 8670^2 .

It is a cyclic number.

It is not a de Polignac number, because 331392949 - 2¹⁵ = 331360181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331392989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165696474 + 165696475.

It is an arithmetic number, because the mean of its divisors is an integer number (165696475).

Almost surely, 2^331392949 is an apocalyptic number.

It is an amenable number.

331392949 is a deficient number, since it is larger than the sum of its proper divisors (1).

331392949 is an equidigital number, since it uses as much as digits as its factorization.

331392949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 43.

The square root of 331392949 is about 18204.2014106634. The cubic root of 331392949 is about 692.0132679526.

The spelling of 331392949 in words is "three hundred thirty-one million, three hundred ninety-two thousand, nine hundred forty-nine".