1390912488 has 192 divisors, whose sum is σ = 4542370560. Its totient is φ = 375902208.

The previous prime is 1390912469. The next prime is 1390912489. The reversal of 1390912488 is 8842190931.

It is not an unprimeable number, because it can be changed into a prime (1390912489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1123806 + ... + 1125042.

It is an arithmetic number, because the mean of its divisors is an integer number (23658180).

Almost surely, 2^1390912488 is an apocalyptic number.

1390912488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390912488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2271185280).

1390912488 is an abundant number, since it is smaller than the sum of its proper divisors (3151458072).

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

1390912488 is a wasteful number, since it uses less digits than its factorization.

1390912488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1390912488 is about 37294.9391741024. The cubic root of 1390912488 is about 1116.2631860877.

The spelling of 1390912488 in words is "one billion, three hundred ninety million, nine hundred twelve thousand, four hundred eighty-eight".