7990036423 has 2 divisors, whose sum is σ = 7990036424. Its totient is φ = 7990036422.

The previous prime is 7990036421. The next prime is 7990036433. The reversal of 7990036423 is 3246300997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7990036423 - 2¹ = 7990036421 is a prime.

Together with 7990036421, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7990036423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7990036421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995018211 + 3995018212.

It is an arithmetic number, because the mean of its divisors is an integer number (3995018212).

Almost surely, 2^7990036423 is an apocalyptic number.

7990036423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7990036423 is an equidigital number, since it uses as much as digits as its factorization.

7990036423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 7990036423 is about 89387.0036582500. The cubic root of 7990036423 is about 1999.1693569805.

The spelling of 7990036423 in words is "seven billion, nine hundred ninety million, thirty-six thousand, four hundred twenty-three".