1390120624 has 10 divisors (see below), whose sum is σ = 2693358740. Its totient is φ = 695060304.

The previous prime is 1390120609. The next prime is 1390120649. The reversal of 1390120624 is 4260210931.

It is a junction number, because it is equal to n+sod(n) for n = 1390120592 and 1390120601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43441254 + ... + 43441285.

It is an arithmetic number, because the mean of its divisors is an integer number (269335874).

Almost surely, 2^1390120624 is an apocalyptic number.

It is an amenable number.

1390120624 is a deficient number, since it is larger than the sum of its proper divisors (1303238116).

1390120624 is an equidigital number, since it uses as much as digits as its factorization.

1390120624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86882547 (or 86882541 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1390120624 is about 37284.3214233543. The cubic root of 1390120624 is about 1116.0513116441.

The spelling of 1390120624 in words is "one billion, three hundred ninety million, one hundred twenty thousand, six hundred twenty-four".