399648946254 has 32 divisors (see below), whose sum is σ = 841400282880. Its totient is φ = 126199818432.

The previous prime is 399648946219. The next prime is 399648946261. The reversal of 399648946254 is 452649846993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3572047 + ... + 3682229.

It is an arithmetic number, because the mean of its divisors is an integer number (26293758840).

Almost surely, 2^399648946254 is an apocalyptic number.

399648946254 is an abundant number, since it is smaller than the sum of its proper divisors (441751336626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399648946254 is a wasteful number, since it uses less digits than its factorization.

399648946254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142024.

The product of its digits is 403107840, while the sum is 69.

The spelling of 399648946254 in words is "three hundred ninety-nine billion, six hundred forty-eight million, nine hundred forty-six thousand, two hundred fifty-four".