1390337009 has 2 divisors, whose sum is σ = 1390337010. Its totient is φ = 1390337008.

The previous prime is 1390336967. The next prime is 1390337057. The reversal of 1390337009 is 9007330931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1343002609 + 47334400 = 36647^2 + 6880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1390337009 - 2¹⁶ = 1390271473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1390337009.

It is not a weakly prime, because it can be changed into another prime (1390337099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695168504 + 695168505.

It is an arithmetic number, because the mean of its divisors is an integer number (695168505).

Almost surely, 2^1390337009 is an apocalyptic number.

It is an amenable number.

1390337009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390337009 is an equidigital number, since it uses as much as digits as its factorization.

1390337009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 1390337009 is about 37287.2231334005. The cubic root of 1390337009 is about 1116.1092165073.

The spelling of 1390337009 in words is "one billion, three hundred ninety million, three hundred thirty-seven thousand, nine".