399067697 has 16 divisors (see below), whose sum is σ = 481520640. Its totient is φ = 323083728.

The previous prime is 399067693. The next prime is 399067703. The reversal of 399067697 is 796760993.

It is a cyclic number.

It is not a de Polignac number, because 399067697 - 2² = 399067693 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399067693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41828 + ... + 50474.

It is an arithmetic number, because the mean of its divisors is an integer number (30095040).

Almost surely, 2^399067697 is an apocalyptic number.

It is an amenable number.

399067697 is a deficient number, since it is larger than the sum of its proper divisors (82452943).

399067697 is a wasteful number, since it uses less digits than its factorization.

399067697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9020.

The product of its (nonzero) digits is 3857868, while the sum is 56.

The square root of 399067697 is about 19976.6788280735. The cubic root of 399067697 is about 736.2334154761.

The spelling of 399067697 in words is "three hundred ninety-nine million, sixty-seven thousand, six hundred ninety-seven".