139489935 has 32 divisors (see below), whose sum is σ = 240988608. Its totient is φ = 68490240.

The previous prime is 139489921. The next prime is 139489943. The reversal of 139489935 is 539984931.

It is a happy number.

It is not a de Polignac number, because 139489935 - 2⁹ = 139489423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100909 + ... + 102281.

It is an arithmetic number, because the mean of its divisors is an integer number (7530894).

Almost surely, 2^139489935 is an apocalyptic number.

139489935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139489935 is a deficient number, since it is larger than the sum of its proper divisors (101498673).

139489935 is a wasteful number, since it uses less digits than its factorization.

139489935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915.

The product of its digits is 1049760, while the sum is 51.

The square root of 139489935 is about 11810.5857179058. The cubic root of 139489935 is about 518.6180453072.

The spelling of 139489935 in words is "one hundred thirty-nine million, four hundred eighty-nine thousand, nine hundred thirty-five".