1392379238 has 8 divisors (see below), whose sum is σ = 2088751440. Its totient is φ = 696128760.

The previous prime is 1392379231. The next prime is 1392379309. The reversal of 1392379238 is 8329732931.

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

It is a junction number, because it is equal to n+sod(n) for n = 1392379192 and 1392379201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392379231) 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, 7748 + ... + 53336.

It is an arithmetic number, because the mean of its divisors is an integer number (261093930).

Almost surely, 2^1392379238 is an apocalyptic number.

1392379238 is a deficient number, since it is larger than the sum of its proper divisors (696372202).

1392379238 is a wasteful number, since it uses less digits than its factorization.

1392379238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60862.

The product of its digits is 489888, while the sum is 47.

The square root of 1392379238 is about 37314.5981889126. The cubic root of 1392379238 is about 1116.6554235248.

The spelling of 1392379238 in words is "one billion, three hundred ninety-two million, three hundred seventy-nine thousand, two hundred thirty-eight".