394453715740 has 48 divisors (see below), whose sum is σ = 946847966400. Its totient is φ = 135218552832.

The previous prime is 394453715731. The next prime is 394453715791. The reversal of 394453715740 is 47517354493.

It is a super-2 number, since 2×394453715740² (a number of 24 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, 610396 + ... + 1077724.

It is an arithmetic number, because the mean of its divisors is an integer number (19725999300).

Almost surely, 2^394453715740 is an apocalyptic number.

It is an amenable number.

394453715740 is an abundant number, since it is smaller than the sum of its proper divisors (552394250660).

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

394453715740 is a wasteful number, since it uses less digits than its factorization.

394453715740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473374 (or 473372 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 394453715740 in words is "three hundred ninety-four billion, four hundred fifty-three million, seven hundred fifteen thousand, seven hundred forty".