392238090 has 96 divisors (see below), whose sum is σ = 1120279680. Its totient is φ = 94773888.

The previous prime is 392238089. The next prime is 392238097. The reversal of 392238090 is 90832293.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (392238097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34344 + ... + 44316.

It is an arithmetic number, because the mean of its divisors is an integer number (11669580).

Almost surely, 2^392238090 is an apocalyptic number.

392238090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 392238090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560139840).

392238090 is an abundant number, since it is smaller than the sum of its proper divisors (728041590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

392238090 is a wasteful number, since it uses less digits than its factorization.

392238090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10028 (or 10025 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 392238090 is about 19805.0016409997. The cubic root of 392238090 is about 732.0092827811.

The spelling of 392238090 in words is "three hundred ninety-two million, two hundred thirty-eight thousand, ninety".