139940900 has 36 divisors (see below), whose sum is σ = 331280880. Its totient is φ = 50887200.

The previous prime is 139940819. The next prime is 139940903. The reversal of 139940900 is 9049931.

It is not an unprimeable number, because it can be changed into a prime (139940903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62510 + ... + 64709.

Almost surely, 2^139940900 is an apocalyptic number.

139940900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139940900 is an abundant number, since it is smaller than the sum of its proper divisors (191339980).

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

139940900 is a wasteful number, since it uses less digits than its factorization.

139940900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127244 (or 127237 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 139940900 is about 11829.6618717527. The cubic root of 139940900 is about 519.1763340914.

The spelling of 139940900 in words is "one hundred thirty-nine million, nine hundred forty thousand, nine hundred".