139281464 has 32 divisors (see below), whose sum is σ = 299791200. Its totient is φ = 59425920.

The previous prime is 139281463. The next prime is 139281487. The reversal of 139281464 is 464182931.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139281463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7394 + ... + 18254.

It is an arithmetic number, because the mean of its divisors is an integer number (9368475).

Almost surely, 2^139281464 is an apocalyptic number.

139281464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139281464 is an abundant number, since it is smaller than the sum of its proper divisors (160509736).

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

139281464 is a wasteful number, since it uses less digits than its factorization.

139281464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11103 (or 11099 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 139281464 is about 11801.7568183724. The cubic root of 139281464 is about 518.3595541877.

The spelling of 139281464 in words is "one hundred thirty-nine million, two hundred eighty-one thousand, four hundred sixty-four".