392440055 has 8 divisors (see below), whose sum is σ = 538203552. Its totient is φ = 269101728.

The previous prime is 392440051. The next prime is 392440057. The reversal of 392440055 is 550044293.

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 392440055 - 2² = 392440051 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 (392440051) 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, 5606252 + ... + 5606321.

It is an arithmetic number, because the mean of its divisors is an integer number (67275444).

Almost surely, 2^392440055 is an apocalyptic number.

392440055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

392440055 is a deficient number, since it is larger than the sum of its proper divisors (145763497).

392440055 is a wasteful number, since it uses less digits than its factorization.

392440055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11212585.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 392440055 is about 19810.0998230700. The cubic root of 392440055 is about 732.1348994166.

The spelling of 392440055 in words is "three hundred ninety-two million, four hundred forty thousand, fifty-five".