93857139 has 6 divisors (see below), whose sum is σ = 135571436. Its totient is φ = 62571420.

The previous prime is 93857129. The next prime is 93857149. The reversal of 93857139 is 93175839.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (93857129) and next prime (93857149).

It is not a de Polignac number, because 93857139 - 2⁵ = 93857107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 93857094 and 93857103.

It is not an unprimeable number, because it can be changed into a prime (93857129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5214277 + ... + 5214294.

Almost surely, 2^93857139 is an apocalyptic number.

93857139 is a deficient number, since it is larger than the sum of its proper divisors (41714297).

93857139 is a wasteful number, since it uses less digits than its factorization.

93857139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10428577 (or 10428574 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 93857139 is about 9687.9894198951. The cubic root of 93857139 is about 454.4531352013.

The spelling of 93857139 in words is "ninety-three million, eight hundred fifty-seven thousand, one hundred thirty-nine".