1390308517 has 16 divisors (see below), whose sum is σ = 1552320000. Its totient is φ = 1236360384.

The previous prime is 1390308511. The next prime is 1390308539. The reversal of 1390308517 is 7158030931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1390308517 - 2⁷ = 1390308389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390308511) 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 15 ways as a sum of consecutive naturals, for example, 176734 + ... + 184432.

It is an arithmetic number, because the mean of its divisors is an integer number (97020000).

Almost surely, 2^1390308517 is an apocalyptic number.

It is an amenable number.

1390308517 is a deficient number, since it is larger than the sum of its proper divisors (162011483).

1390308517 is a wasteful number, since it uses less digits than its factorization.

1390308517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8220.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1390308517 is about 37286.8410702757. The cubic root of 1390308517 is about 1116.1015923603.

The spelling of 1390308517 in words is "one billion, three hundred ninety million, three hundred eight thousand, five hundred seventeen".