1390996751 has 8 divisors (see below), whose sum is σ = 1408471680. Its totient is φ = 1373539032.

The previous prime is 1390996681. The next prime is 1390996787. The reversal of 1390996751 is 1576990931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390996751 is a prime.

It is a super-2 number, since 2×1390996751² = 3869743922585112002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1390996751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390996051) 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 7 ways as a sum of consecutive naturals, for example, 252836 + ... + 258278.

It is an arithmetic number, because the mean of its divisors is an integer number (176058960).

Almost surely, 2^1390996751 is an apocalyptic number.

1390996751 is a deficient number, since it is larger than the sum of its proper divisors (17474929).

1390996751 is an equidigital number, since it uses as much as digits as its factorization.

1390996751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8605.

The product of its (nonzero) digits is 459270, while the sum is 50.

The square root of 1390996751 is about 37296.0688410991. The cubic root of 1390996751 is about 1116.2857271141.

The spelling of 1390996751 in words is "one billion, three hundred ninety million, nine hundred ninety-six thousand, seven hundred fifty-one".