93139440 has 40 divisors (see below), whose sum is σ = 288733008. Its totient is φ = 24837120.

The previous prime is 93139439. The next prime is 93139441. The reversal of 93139440 is 4493139.

It is an interprime number because it is at equal distance from previous prime (93139439) and next prime (93139441).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93139441) 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 7 ways as a sum of consecutive naturals, for example, 193801 + ... + 194280.

Almost surely, 2^93139440 is an apocalyptic number.

It is an amenable number.

93139440 is an abundant number, since it is smaller than the sum of its proper divisors (195593568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

93139440 is a wasteful number, since it uses less digits than its factorization.

93139440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388097 (or 388091 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 93139440 is about 9650.8776802942. The cubic root of 93139440 is about 453.2918118449.

The spelling of 93139440 in words is "ninety-three million, one hundred thirty-nine thousand, four hundred forty".