93978057390 has 32 divisors (see below), whose sum is σ = 257768386560. Its totient is φ = 21480698784.

The previous prime is 93978057379. The next prime is 93978057403. The reversal of 93978057390 is 9375087939.

It is a super-2 number, since 2×93978057390² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223757070 + ... + 223757489.

It is an arithmetic number, because the mean of its divisors is an integer number (8055262080).

Almost surely, 2^93978057390 is an apocalyptic number.

93978057390 is an abundant number, since it is smaller than the sum of its proper divisors (163790329170).

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

93978057390 is a wasteful number, since it uses less digits than its factorization.

93978057390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447514576.

The product of its (nonzero) digits is 12859560, while the sum is 60.

The spelling of 93978057390 in words is "ninety-three billion, nine hundred seventy-eight million, fifty-seven thousand, three hundred ninety".