1390612885 has 8 divisors (see below), whose sum is σ = 1671334560. Its totient is φ = 1110757584.

The previous prime is 1390612879. The next prime is 1390612889. The reversal of 1390612885 is 5882160931.

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

It is a cyclic number.

It is not a de Polignac number, because 1390612885 - 2²⁵ = 1357058453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390612889) 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, 213055 + ... + 219484.

It is an arithmetic number, because the mean of its divisors is an integer number (208916820).

Almost surely, 2^1390612885 is an apocalyptic number.

It is an amenable number.

1390612885 is a deficient number, since it is larger than the sum of its proper divisors (280721675).

1390612885 is an equidigital number, since it uses as much as digits as its factorization.

1390612885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433187.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 1390612885 is about 37290.9222867979. The cubic root of 1390612885 is about 1116.1830325152.

The spelling of 1390612885 in words is "one billion, three hundred ninety million, six hundred twelve thousand, eight hundred eighty-five".