393449828540 has 24 divisors (see below), whose sum is σ = 836199398160. Its totient is φ = 155483787008.

The previous prime is 393449828539. The next prime is 393449828591. The reversal of 393449828540 is 45828944393.

It is a self number, because there is not a number n which added to its sum of digits gives 393449828540.

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, 118507325 + ... + 118510644.

It is an arithmetic number, because the mean of its divisors is an integer number (34841641590).

Almost surely, 2^393449828540 is an apocalyptic number.

It is an amenable number.

393449828540 is an abundant number, since it is smaller than the sum of its proper divisors (442749569620).

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

393449828540 is a wasteful number, since it uses less digits than its factorization.

393449828540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237018061 (or 237018059 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 59.

The spelling of 393449828540 in words is "three hundred ninety-three billion, four hundred forty-nine million, eight hundred twenty-eight thousand, five hundred forty".