250939139 has 8 divisors (see below), whose sum is σ = 273942000. Its totient is φ = 227968000.

The previous prime is 250939133. The next prime is 250939151. The reversal of 250939139 is 931939052.

It is a happy number.

250939139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 250939139 - 2⁴ = 250939123 is a prime.

It is a super-2 number, since 2×250939139² = 125940902964122642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 250939096 and 250939105.

It is not an unprimeable number, because it can be changed into a prime (250939133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10487 + ... + 24735.

It is an arithmetic number, because the mean of its divisors is an integer number (34242750).

Almost surely, 2^250939139 is an apocalyptic number.

250939139 is a deficient number, since it is larger than the sum of its proper divisors (23002861).

250939139 is a wasteful number, since it uses less digits than its factorization.

250939139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15861.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 250939139 is about 15841.0586451790. The cubic root of 250939139 is about 630.7483665756.

The spelling of 250939139 in words is "two hundred fifty million, nine hundred thirty-nine thousand, one hundred thirty-nine".