396930949 has 2 divisors, whose sum is σ = 396930950. Its totient is φ = 396930948.

The previous prime is 396930923. The next prime is 396930959. The reversal of 396930949 is 949039693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242798724 + 154132225 = 15582^2 + 12415^2 .

It is a cyclic number.

It is not a de Polignac number, because 396930949 - 2¹⁵ = 396898181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 396930896 and 396930905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396930959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198465474 + 198465475.

It is an arithmetic number, because the mean of its divisors is an integer number (198465475).

Almost surely, 2^396930949 is an apocalyptic number.

It is an amenable number.

396930949 is a deficient number, since it is larger than the sum of its proper divisors (1).

396930949 is an equidigital number, since it uses as much as digits as its factorization.

396930949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1417176, while the sum is 52.

The square root of 396930949 is about 19923.1259846441. The cubic root of 396930949 is about 734.9170461858.

The spelling of 396930949 in words is "three hundred ninety-six million, nine hundred thirty thousand, nine hundred forty-nine".