139897484 has 12 divisors (see below), whose sum is σ = 247198224. Its totient is φ = 69269424.

The previous prime is 139897411. The next prime is 139897487. The reversal of 139897484 is 484798931.

It is not an unprimeable number, because it can be changed into a prime (139897487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169367 + ... + 170190.

It is an arithmetic number, because the mean of its divisors is an integer number (20599852).

Almost surely, 2^139897484 is an apocalyptic number.

It is an amenable number.

139897484 is a deficient number, since it is larger than the sum of its proper divisors (107300740).

139897484 is a wasteful number, since it uses less digits than its factorization.

139897484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339664 (or 339662 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 139897484 is about 11827.8266811786. The cubic root of 139897484 is about 519.1226378736.

The spelling of 139897484 in words is "one hundred thirty-nine million, eight hundred ninety-seven thousand, four hundred eighty-four".