399422463 has 16 divisors (see below), whose sum is σ = 615154176. Its totient is φ = 227834240.

The previous prime is 399422453. The next prime is 399422479. The reversal of 399422463 is 364224993.

It is a cyclic number.

It is not a de Polignac number, because 399422463 - 2⁵ = 399422431 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399422453) 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, 355431 + ... + 356552.

It is an arithmetic number, because the mean of its divisors is an integer number (38447136).

Almost surely, 2^399422463 is an apocalyptic number.

399422463 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

399422463 is a deficient number, since it is larger than the sum of its proper divisors (215731713).

399422463 is a wasteful number, since it uses less digits than its factorization.

399422463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712014.

The product of its digits is 279936, while the sum is 42.

The square root of 399422463 is about 19985.5563595313. The cubic root of 399422463 is about 736.4515181738.

The spelling of 399422463 in words is "three hundred ninety-nine million, four hundred twenty-two thousand, four hundred sixty-three".