399240610133 has 4 divisors (see below), whose sum is σ = 399242468640. Its totient is φ = 399238751628.

The previous prime is 399240610121. The next prime is 399240610151. The reversal of 399240610133 is 331016042993.

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 399240610133 - 2⁸ = 399240609877 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 (399240610183) 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, 557435 + ... + 1053192.

It is an arithmetic number, because the mean of its divisors is an integer number (99810617160).

Almost surely, 2^399240610133 is an apocalyptic number.

It is an amenable number.

399240610133 is a deficient number, since it is larger than the sum of its proper divisors (1858507).

399240610133 is a wasteful number, since it uses less digits than its factorization.

399240610133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858506.

The product of its (nonzero) digits is 104976, while the sum is 41.

The spelling of 399240610133 in words is "three hundred ninety-nine billion, two hundred forty million, six hundred ten thousand, one hundred thirty-three".