94139257977 has 12 divisors (see below), whose sum is σ = 135988627684. Its totient is φ = 62755028640.

The previous prime is 94139257969. The next prime is 94139257981. The reversal of 94139257977 is 77975293149.

It can be written as a sum of positive squares in 2 ways, for example, as 29645608041 + 64493649936 = 172179^2 + 253956^2 .

It is not a de Polignac number, because 94139257977 - 2³ = 94139257969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94139257907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237274 + ... + 494547.

Almost surely, 2^94139257977 is an apocalyptic number.

It is an amenable number.

94139257977 is a deficient number, since it is larger than the sum of its proper divisors (41849369707).

94139257977 is a wasteful number, since it uses less digits than its factorization.

94139257977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746120 (or 746117 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 63.

The spelling of 94139257977 in words is "ninety-four billion, one hundred thirty-nine million, two hundred fifty-seven thousand, nine hundred seventy-seven".