1390088871 has 20 divisors (see below), whose sum is σ = 2148161400. Its totient is φ = 894768336.

The previous prime is 1390088863. The next prime is 1390088981. The reversal of 1390088871 is 1788800931.

It is not a de Polignac number, because 1390088871 - 2³ = 1390088863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390088831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 293541 + ... + 298238.

It is an arithmetic number, because the mean of its divisors is an integer number (107408070).

Almost surely, 2^1390088871 is an apocalyptic number.

1390088871 is a deficient number, since it is larger than the sum of its proper divisors (758072529).

1390088871 is an equidigital number, since it uses as much as digits as its factorization.

1390088871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591820 (or 591811 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 1390088871 is about 37283.8955985020. The cubic root of 1390088871 is about 1116.0428140009.

The spelling of 1390088871 in words is "one billion, three hundred ninety million, eighty-eight thousand, eight hundred seventy-one".