7990036477 has 2 divisors, whose sum is σ = 7990036478. Its totient is φ = 7990036476.

The previous prime is 7990036433. The next prime is 7990036513. The reversal of 7990036477 is 7746300997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7294184836 + 695851641 = 85406^2 + 26379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7990036477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7990036777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995018238 + 3995018239.

It is an arithmetic number, because the mean of its divisors is an integer number (3995018239).

Almost surely, 2^7990036477 is an apocalyptic number.

It is an amenable number.

7990036477 is a deficient number, since it is larger than the sum of its proper divisors (1).

7990036477 is an equidigital number, since it uses as much as digits as its factorization.

7990036477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000376, while the sum is 52.

The square root of 7990036477 is about 89387.0039603073. The cubic root of 7990036477 is about 1999.1693614843.

The spelling of 7990036477 in words is "seven billion, nine hundred ninety million, thirty-six thousand, four hundred seventy-seven".