139641100 has 18 divisors (see below), whose sum is σ = 303021404. Its totient is φ = 55856400.

The previous prime is 139641091. The next prime is 139641107. The reversal of 139641100 is 1146931.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (139641107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 698106 + ... + 698305.

Almost surely, 2^139641100 is an apocalyptic number.

139641100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139641100 is an abundant number, since it is smaller than the sum of its proper divisors (163380304).

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

139641100 is a wasteful number, since it uses less digits than its factorization.

139641100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396425 (or 1396418 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 139641100 is about 11816.9835406503. The cubic root of 139641100 is about 518.8053194985.

The spelling of 139641100 in words is "one hundred thirty-nine million, six hundred forty-one thousand, one hundred".