100139494 has 32 divisors (see below), whose sum is σ = 191257920. Its totient is φ = 38247552.

The previous prime is 100139483. The next prime is 100139497. The reversal of 100139494 is 494931001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100139497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4209 + ... + 14764.

It is an arithmetic number, because the mean of its divisors is an integer number (5976810).

Almost surely, 2^100139494 is an apocalyptic number.

100139494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

100139494 is a deficient number, since it is larger than the sum of its proper divisors (91118426).

100139494 is a wasteful number, since it uses less digits than its factorization.

100139494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19024.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 100139494 is about 10006.9722693730. The cubic root of 100139494 is about 464.3746076824.

The spelling of 100139494 in words is "one hundred million, one hundred thirty-nine thousand, four hundred ninety-four".