393054140 has 24 divisors (see below), whose sum is σ = 868857360. Its totient is φ = 148946688.

The previous prime is 393054113. The next prime is 393054157. The reversal of 393054140 is 41450393.

It is a super-2 number, since 2×393054140² = 308983113942279200, which 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 7 ways as a sum of consecutive naturals, for example, 516797 + ... + 517556.

It is an arithmetic number, because the mean of its divisors is an integer number (36202390).

Almost surely, 2^393054140 is an apocalyptic number.

It is an amenable number.

393054140 is an abundant number, since it is smaller than the sum of its proper divisors (475803220).

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

393054140 is a wasteful number, since it uses less digits than its factorization.

393054140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034381 (or 1034379 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 393054140 is about 19825.5930554423. The cubic root of 393054140 is about 732.5165787346.

The spelling of 393054140 in words is "three hundred ninety-three million, fifty-four thousand, one hundred forty".