399937101 has 4 divisors (see below), whose sum is σ = 533249472. Its totient is φ = 266624732.

The previous prime is 399937093. The next prime is 399937117. The reversal of 399937101 is 101739993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 399937101 - 2³ = 399937093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399937151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66656181 + ... + 66656186.

It is an arithmetic number, because the mean of its divisors is an integer number (133312368).

Almost surely, 2^399937101 is an apocalyptic number.

It is an amenable number.

399937101 is a deficient number, since it is larger than the sum of its proper divisors (133312371).

399937101 is a wasteful number, since it uses less digits than its factorization.

399937101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133312370.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 399937101 is about 19998.4274631782. The cubic root of 399937101 is about 736.7676773874.

The spelling of 399937101 in words is "three hundred ninety-nine million, nine hundred thirty-seven thousand, one hundred one".