394668701440 has 108 divisors (see below), whose sum is σ = 1023668856504. Its totient is φ = 145723748352.

The previous prime is 394668701431. The next prime is 394668701467. The reversal of 394668701440 is 44107866493.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 695914 + ... + 1128553.

It is an arithmetic number, because the mean of its divisors is an integer number (9478415338).

Almost surely, 2^394668701440 is an apocalyptic number.

It is an amenable number.

394668701440 is an abundant number, since it is smaller than the sum of its proper divisors (629000155064).

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

394668701440 is a wasteful number, since it uses less digits than its factorization.

394668701440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824514 (or 1824487 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 394668701440 in words is "three hundred ninety-four billion, six hundred sixty-eight million, seven hundred one thousand, four hundred forty".