399417436097 has 2 divisors, whose sum is σ = 399417436098. Its totient is φ = 399417436096.

The previous prime is 399417436091. The next prime is 399417436147. The reversal of 399417436097 is 790634714993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333770797441 + 65646638656 = 577729^2 + 256216^2 .

It is a cyclic number.

It is not a de Polignac number, because 399417436097 - 2²² = 399413241793 is a prime.

It is not a weakly prime, because it can be changed into another prime (399417436091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199708718048 + 199708718049.

It is an arithmetic number, because the mean of its divisors is an integer number (199708718049).

Almost surely, 2^399417436097 is an apocalyptic number.

It is an amenable number.

399417436097 is a deficient number, since it is larger than the sum of its proper divisors (1).

399417436097 is an equidigital number, since it uses as much as digits as its factorization.

399417436097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30862944, while the sum is 62.

The spelling of 399417436097 in words is "three hundred ninety-nine billion, four hundred seventeen million, four hundred thirty-six thousand, ninety-seven".