1390072297 has 4 divisors (see below), whose sum is σ = 1406820240. Its totient is φ = 1373324356.

The previous prime is 1390072267. The next prime is 1390072339. The reversal of 1390072297 is 7922700931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1390072297 - 2¹¹ = 1390070249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390072207) 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 3 ways as a sum of consecutive naturals, for example, 8373847 + ... + 8374012.

It is an arithmetic number, because the mean of its divisors is an integer number (351705060).

Almost surely, 2^1390072297 is an apocalyptic number.

It is an amenable number.

1390072297 is a deficient number, since it is larger than the sum of its proper divisors (16747943).

1390072297 is an equidigital number, since it uses as much as digits as its factorization.

1390072297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16747942.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 1390072297 is about 37283.6733302930. The cubic root of 1390072297 is about 1116.0383784650.

The spelling of 1390072297 in words is "one billion, three hundred ninety million, seventy-two thousand, two hundred ninety-seven".