1390852980 has 72 divisors (see below), whose sum is σ = 4602465504. Its totient is φ = 337176000.

The previous prime is 1390852979. The next prime is 1390852993. The reversal of 1390852980 is 892580931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349246 + ... + 353205.

It is an arithmetic number, because the mean of its divisors is an integer number (63923132).

Almost surely, 2^1390852980 is an apocalyptic number.

1390852980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1390852980 is an abundant number, since it is smaller than the sum of its proper divisors (3211612524).

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

1390852980 is a wasteful number, since it uses less digits than its factorization.

1390852980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702477 (or 702472 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1390852980 is about 37294.1413629540. The cubic root of 1390852980 is about 1116.2472666733.

The spelling of 1390852980 in words is "one billion, three hundred ninety million, eight hundred fifty-two thousand, nine hundred eighty".