399240603671 has 8 divisors (see below), whose sum is σ = 491373050784. Its totient is φ = 315882675360.

The previous prime is 399240603637. The next prime is 399240603673. The reversal of 399240603671 is 176306042993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 399240603671 - 2²² = 399236409367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399240603673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2193629600 + ... + 2193629781.

It is an arithmetic number, because the mean of its divisors is an integer number (61421631348).

Almost surely, 2^399240603671 is an apocalyptic number.

399240603671 is a deficient number, since it is larger than the sum of its proper divisors (92132447113).

399240603671 is a wasteful number, since it uses less digits than its factorization.

399240603671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387259401.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 399240603671 in words is "three hundred ninety-nine billion, two hundred forty million, six hundred three thousand, six hundred seventy-one".