389491494 has 36 divisors (see below), whose sum is σ = 906951852. Its totient is φ = 111186600.

The previous prime is 389491481. The next prime is 389491517. The reversal of 389491494 is 494194983.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 337819 + ... + 338969.

It is an arithmetic number, because the mean of its divisors is an integer number (25193107).

Almost surely, 2^389491494 is an apocalyptic number.

389491494 is an abundant number, since it is smaller than the sum of its proper divisors (517460358).

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

389491494 is an equidigital number, since it uses as much as digits as its factorization.

389491494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321 (or 1163 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 389491494 is about 19735.5388576041. The cubic root of 389491494 is about 730.2966793101.

Multiplying 389491494 by its product of digits (1119744), we get a square (436130763457536 = 20883744²).

The spelling of 389491494 in words is "three hundred eighty-nine million, four hundred ninety-one thousand, four hundred ninety-four".