139949950 has 96 divisors (see below), whose sum is σ = 322907904. Its totient is φ = 44029440.

The previous prime is 139949939. The next prime is 139949959. The reversal of 139949950 is 59949931.

It is a junction number, because it is equal to n+sod(n) for n = 139949894 and 139949903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139949959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255577 + ... + 256123.

It is an arithmetic number, because the mean of its divisors is an integer number (3363624).

Almost surely, 2^139949950 is an apocalyptic number.

139949950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139949950 is an abundant number, since it is smaller than the sum of its proper divisors (182957954).

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

139949950 is a wasteful number, since it uses less digits than its factorization.

139949950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 139949950 is about 11830.0443786150. The cubic root of 139949950 is about 519.1875255886.

The spelling of 139949950 in words is "one hundred thirty-nine million, nine hundred forty-nine thousand, nine hundred fifty".