139924485 has 24 divisors (see below), whose sum is σ = 242817120. Its totient is φ = 74539872.

The previous prime is 139924481. The next prime is 139924487. The reversal of 139924485 is 584429931.

It is not a de Polignac number, because 139924485 - 2² = 139924481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 139924485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139924481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63126 + ... + 65304.

It is an arithmetic number, because the mean of its divisors is an integer number (10117380).

Almost surely, 2^139924485 is an apocalyptic number.

139924485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139924485 is a deficient number, since it is larger than the sum of its proper divisors (102892635).

139924485 is a wasteful number, since it uses less digits than its factorization.

139924485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617 (or 3614 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 139924485 is about 11828.9680445929. The cubic root of 139924485 is about 519.1560335866.

The spelling of 139924485 in words is "one hundred thirty-nine million, nine hundred twenty-four thousand, four hundred eighty-five".