94139723 has 2 divisors, whose sum is σ = 94139724. Its totient is φ = 94139722.

The previous prime is 94139719. The next prime is 94139791. The reversal of 94139723 is 32793149.

It is a weak prime.

It is an emirp because it is prime and its reverse (32793149) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94139723 - 2² = 94139719 is a prime.

It is not a weakly prime, because it can be changed into another prime (94133723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47069861 + 47069862.

It is an arithmetic number, because the mean of its divisors is an integer number (47069862).

Almost surely, 2^94139723 is an apocalyptic number.

94139723 is a deficient number, since it is larger than the sum of its proper divisors (1).

94139723 is an equidigital number, since it uses as much as digits as its factorization.

94139723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 94139723 is about 9702.5627027090. The cubic root of 94139723 is about 454.9087656707.

The spelling of 94139723 in words is "ninety-four million, one hundred thirty-nine thousand, seven hundred twenty-three".