399241140863 has 4 divisors (see below), whose sum is σ = 399268581480. Its totient is φ = 399213700248.

The previous prime is 399241140853. The next prime is 399241140869. The reversal of 399241140863 is 368041142993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 399241140863 - 2¹⁴ = 399241124479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399241140869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13698473 + ... + 13727586.

It is an arithmetic number, because the mean of its divisors is an integer number (99817145370).

Almost surely, 2^399241140863 is an apocalyptic number.

399241140863 is a deficient number, since it is larger than the sum of its proper divisors (27440617).

399241140863 is a wasteful number, since it uses less digits than its factorization.

399241140863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27440616.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 399241140863 in words is "three hundred ninety-nine billion, two hundred forty-one million, one hundred forty thousand, eight hundred sixty-three".