79901443 has 2 divisors, whose sum is σ = 79901444. Its totient is φ = 79901442.

The previous prime is 79901429. The next prime is 79901447. The reversal of 79901443 is 34410997.

It is a strong prime.

It is an emirp because it is prime and its reverse (34410997) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79901443 is a prime.

It is not a weakly prime, because it can be changed into another prime (79901447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39950721 + 39950722.

It is an arithmetic number, because the mean of its divisors is an integer number (39950722).

Almost surely, 2^79901443 is an apocalyptic number.

79901443 is a deficient number, since it is larger than the sum of its proper divisors (1).

79901443 is an equidigital number, since it uses as much as digits as its factorization.

79901443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 79901443 is about 8938.7607082861. The cubic root of 79901443 is about 430.7099197767.

The spelling of 79901443 in words is "seventy-nine million, nine hundred one thousand, four hundred forty-three".