399035051 has 2 divisors, whose sum is σ = 399035052. Its totient is φ = 399035050.

The previous prime is 399035023. The next prime is 399035057. The reversal of 399035051 is 150530993.

It is a strong prime.

It is an emirp because it is prime and its reverse (150530993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 399035051 - 2²⁶ = 331926187 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (399035057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199517525 + 199517526.

It is an arithmetic number, because the mean of its divisors is an integer number (199517526).

Almost surely, 2^399035051 is an apocalyptic number.

399035051 is a deficient number, since it is larger than the sum of its proper divisors (1).

399035051 is an equidigital number, since it uses as much as digits as its factorization.

399035051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 399035051 is about 19975.8617085722. The cubic root of 399035051 is about 736.2133389063.

The spelling of 399035051 in words is "three hundred ninety-nine million, thirty-five thousand, fifty-one".