1390115238 has 16 divisors (see below), whose sum is σ = 2780640576. Its totient is φ = 463303400.

The previous prime is 1390115219. The next prime is 1390115249. The reversal of 1390115238 is 8325110931.

It is a junction number, because it is equal to n+sod(n) for n = 1390115199 and 1390115208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43513 + ... + 68363.

It is an arithmetic number, because the mean of its divisors is an integer number (173790036).

Almost surely, 2^1390115238 is an apocalyptic number.

1390115238 is an abundant number, since it is smaller than the sum of its proper divisors (1390525338).

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

1390115238 is a wasteful number, since it uses less digits than its factorization.

1390115238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34179.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1390115238 is about 37284.2491945325. The cubic root of 1390115238 is about 1116.0498702679.

The spelling of 1390115238 in words is "one billion, three hundred ninety million, one hundred fifteen thousand, two hundred thirty-eight".