53398979 has 2 divisors, whose sum is σ = 53398980. Its totient is φ = 53398978.

The previous prime is 53398903. The next prime is 53398993. The reversal of 53398979 is 97989335.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53398979 - 2¹⁶ = 53333443 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53398979.

It is not a weakly prime, because it can be changed into another prime (53398999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26699489 + 26699490.

It is an arithmetic number, because the mean of its divisors is an integer number (26699490).

Almost surely, 2^53398979 is an apocalyptic number.

53398979 is a deficient number, since it is larger than the sum of its proper divisors (1).

53398979 is an equidigital number, since it uses as much as digits as its factorization.

53398979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 53398979 is about 7307.4605028012. The cubic root of 53398979 is about 376.5687855760.

The spelling of 53398979 in words is "fifty-three million, three hundred ninety-eight thousand, nine hundred seventy-nine".