390674551 has 2 divisors, whose sum is σ = 390674552. Its totient is φ = 390674550.

The previous prime is 390674539. The next prime is 390674587. The reversal of 390674551 is 155476093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 390674551 - 2⁷ = 390674423 is a prime.

It is a Chen prime.

It is equal to p_20865199 and since 390674551 and 20865199 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390674351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195337275 + 195337276.

It is an arithmetic number, because the mean of its divisors is an integer number (195337276).

Almost surely, 2^390674551 is an apocalyptic number.

390674551 is a deficient number, since it is larger than the sum of its proper divisors (1).

390674551 is an equidigital number, since it uses as much as digits as its factorization.

390674551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 390674551 is about 19765.4888884642. The cubic root of 390674551 is about 731.0353426870.

The spelling of 390674551 in words is "three hundred ninety million, six hundred seventy-four thousand, five hundred fifty-one".