1390557337 has 12 divisors (see below), whose sum is σ = 1550954860. Its totient is φ = 1239319872.

The previous prime is 1390557317. The next prime is 1390557409. The reversal of 1390557337 is 7337550931.

It can be written as a sum of positive squares in 6 ways, for example, as 308213136 + 1082344201 = 17556^2 + 32899^2 .

It is not a de Polignac number, because 1390557337 - 2¹⁹ = 1390033049 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1390557293 and 1390557302.

It is not an unprimeable number, because it can be changed into a prime (1390557307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52662 + ... + 74527.

Almost surely, 2^1390557337 is an apocalyptic number.

It is an amenable number.

1390557337 is a deficient number, since it is larger than the sum of its proper divisors (160397523).

1390557337 is a wasteful number, since it uses less digits than its factorization.

1390557337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127260 (or 127231 counting only the distinct ones).

The product of its (nonzero) digits is 297675, while the sum is 43.

The square root of 1390557337 is about 37290.1774868396. The cubic root of 1390557337 is about 1116.1681703487.

The spelling of 1390557337 in words is "one billion, three hundred ninety million, five hundred fifty-seven thousand, three hundred thirty-seven".