7992890947 has 2 divisors, whose sum is σ = 7992890948. Its totient is φ = 7992890946.

The previous prime is 7992890831. The next prime is 7992890963. The reversal of 7992890947 is 7490982997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7992890947 - 2⁷ = 7992890819 is a prime.

It is not a weakly prime, because it can be changed into another prime (7992891947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3996445473 + 3996445474.

It is an arithmetic number, because the mean of its divisors is an integer number (3996445474).

Almost surely, 2^7992890947 is an apocalyptic number.

7992890947 is a deficient number, since it is larger than the sum of its proper divisors (1).

7992890947 is an equidigital number, since it uses as much as digits as its factorization.

7992890947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20575296, while the sum is 64.

The square root of 7992890947 is about 89402.9694529214. The cubic root of 7992890947 is about 1999.4074033486.

The spelling of 7992890947 in words is "seven billion, nine hundred ninety-two million, eight hundred ninety thousand, nine hundred forty-seven".