139492950 has 24 divisors (see below), whose sum is σ = 345942888. Its totient is φ = 37198080.

The previous prime is 139492931. The next prime is 139492957. The reversal of 139492950 is 59294931.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139492957) 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 11 ways as a sum of consecutive naturals, for example, 464827 + ... + 465126.

It is an arithmetic number, because the mean of its divisors is an integer number (14414287).

Almost surely, 2^139492950 is an apocalyptic number.

139492950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139492950 is an abundant number, since it is smaller than the sum of its proper divisors (206449938).

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

139492950 is a wasteful number, since it uses less digits than its factorization.

139492950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929968 (or 929963 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 139492950 is about 11810.7133569484. The cubic root of 139492950 is about 518.6217818304.

The spelling of 139492950 in words is "one hundred thirty-nine million, four hundred ninety-two thousand, nine hundred fifty".