139288950 has 48 divisors (see below), whose sum is σ = 383822160. Its totient is φ = 37143360.

The previous prime is 139288949. The next prime is 139288951. The reversal of 139288950 is 59882931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139288949) and next prime (139288951).

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

It is a junction number, because it is equal to n+sod(n) for n = 139288896 and 139288905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139288951) 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 23 ways as a sum of consecutive naturals, for example, 50239 + ... + 52938.

It is an arithmetic number, because the mean of its divisors is an integer number (7996295).

Almost surely, 2^139288950 is an apocalyptic number.

139288950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139288950 is an abundant number, since it is smaller than the sum of its proper divisors (244533210).

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

139288950 is a wasteful number, since it uses less digits than its factorization.

139288950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103198 (or 103187 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 139288950 is about 11802.0739702817. The cubic root of 139288950 is about 518.3688408269.

The spelling of 139288950 in words is "one hundred thirty-nine million, two hundred eighty-eight thousand, nine hundred fifty".