389434350 has 24 divisors (see below), whose sum is σ = 965797560. Its totient is φ = 103849120.

The previous prime is 389434349. The next prime is 389434403. The reversal of 389434350 is 53434983.

It is a super-2 number, since 2×389434350² = 303318225919845000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 389434299 and 389434308.

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, 1297965 + ... + 1298264.

It is an arithmetic number, because the mean of its divisors is an integer number (40241565).

Almost surely, 2^389434350 is an apocalyptic number.

389434350 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389434350 is an abundant number, since it is smaller than the sum of its proper divisors (576363210).

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

389434350 is a wasteful number, since it uses less digits than its factorization.

389434350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596244 (or 2596239 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 389434350 is about 19734.0910609027. The cubic root of 389434350 is about 730.2609625571.

The spelling of 389434350 in words is "three hundred eighty-nine million, four hundred thirty-four thousand, three hundred fifty".