393488057469 has 24 divisors (see below), whose sum is σ = 568254732960. Its totient is φ = 242086059072.

The previous prime is 393488057441. The next prime is 393488057483. The reversal of 393488057469 is 964750884393.

It is not a de Polignac number, because 393488057469 - 2¹² = 393488053373 is a prime.

It is a super-2 number, since 2×393488057469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393488057419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980342 + ... + 2169960.

It is an arithmetic number, because the mean of its divisors is an integer number (23677280540).

Almost surely, 2^393488057469 is an apocalyptic number.

393488057469 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

393488057469 is a deficient number, since it is larger than the sum of its proper divisors (174766675491).

393488057469 is a wasteful number, since it uses less digits than its factorization.

393488057469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193741 (or 193728 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 393488057469 in words is "three hundred ninety-three billion, four hundred eighty-eight million, fifty-seven thousand, four hundred sixty-nine".