399703504261 has 8 divisors (see below), whose sum is σ = 400656430944. Its totient is φ = 398750950320.

The previous prime is 399703504259. The next prime is 399703504273. The reversal of 399703504261 is 162405307993.

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

It is a cyclic number.

It is not a de Polignac number, because 399703504261 - 2¹ = 399703504259 is a prime.

It is a super-2 number, since 2×399703504261² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399703504861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2116246 + ... + 2297368.

It is an arithmetic number, because the mean of its divisors is an integer number (50082053868).

Almost surely, 2^399703504261 is an apocalyptic number.

It is an amenable number.

399703504261 is a deficient number, since it is larger than the sum of its proper divisors (952926683).

399703504261 is a wasteful number, since it uses less digits than its factorization.

399703504261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186371.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 399703504261 in words is "three hundred ninety-nine billion, seven hundred three million, five hundred four thousand, two hundred sixty-one".