399455544444454 has 8 divisors (see below), whose sum is σ = 599269418615520. Its totient is φ = 199699071572616.

The previous prime is 399455544444343. The next prime is 399455544444487. The reversal of 399455544444454 is 454444445554993.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14350307409 + ... + 14350335244.

It is an arithmetic number, because the mean of its divisors is an integer number (74908677326940).

Almost surely, 2^{399455544444454} is an apocalyptic number.

399455544444454 is a deficient number, since it is larger than the sum of its proper divisors (199813874171066).

399455544444454 is a wasteful number, since it uses less digits than its factorization.

399455544444454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28700649614.

The product of its digits is 9953280000, while the sum is 73.

The spelling of 399455544444454 in words is "three hundred ninety-nine trillion, four hundred fifty-five billion, five hundred forty-four million, four hundred forty-four thousand, four hundred fifty-four".