396111881 has 8 divisors (see below), whose sum is σ = 435024000. Its totient is φ = 357683440.

The previous prime is 396111871. The next prime is 396111887. The reversal of 396111881 is 188111693.

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

It is not a de Polignac number, because 396111881 - 2¹⁸ = 395849737 is a prime.

It is a super-2 number, since 2×396111881² = 313809244538716322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (396111887) 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, 119201 + ... + 122478.

It is an arithmetic number, because the mean of its divisors is an integer number (54378000).

Almost surely, 2^396111881 is an apocalyptic number.

It is an amenable number.

396111881 is a deficient number, since it is larger than the sum of its proper divisors (38912119).

396111881 is a wasteful number, since it uses less digits than its factorization.

396111881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241839.

The product of its digits is 10368, while the sum is 38.

The square root of 396111881 is about 19902.5596595011. The cubic root of 396111881 is about 734.4111970352.

The spelling of 396111881 in words is "three hundred ninety-six million, one hundred eleven thousand, eight hundred eighty-one".