399791124481 has 8 divisors (see below), whose sum is σ = 457107862464. Its totient is φ = 342525316560.

The previous prime is 399791124479. The next prime is 399791124493. The reversal of 399791124481 is 184421197993.

It is a happy number.

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

It is not a de Polignac number, because 399791124481 - 2¹ = 399791124479 is a prime.

It is a super-2 number, since 2×399791124481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399791124401) 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, 12715690 + ... + 12747091.

It is an arithmetic number, because the mean of its divisors is an integer number (57138482808).

Almost surely, 2^399791124481 is an apocalyptic number.

It is an amenable number.

399791124481 is a deficient number, since it is larger than the sum of its proper divisors (57316737983).

399791124481 is a wasteful number, since it uses less digits than its factorization.

399791124481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25465031.

The product of its digits is 3919104, while the sum is 58.

The spelling of 399791124481 in words is "three hundred ninety-nine billion, seven hundred ninety-one million, one hundred twenty-four thousand, four hundred eighty-one".