250138829 has 4 divisors (see below), whose sum is σ = 250211676. Its totient is φ = 250065984.

The previous prime is 250138813. The next prime is 250138831. The reversal of 250138829 is 928831052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120406729 + 129732100 = 10973^2 + 11390^2 .

It is a cyclic number.

It is not a de Polignac number, because 250138829 - 2⁴ = 250138813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 250138792 and 250138801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250138849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31004 + ... + 38229.

It is an arithmetic number, because the mean of its divisors is an integer number (62552919).

Almost surely, 2^250138829 is an apocalyptic number.

It is an amenable number.

250138829 is a deficient number, since it is larger than the sum of its proper divisors (72847).

250138829 is an equidigital number, since it uses as much as digits as its factorization.

250138829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72846.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 250138829 is about 15815.7778499826. Note that the first 3 decimals coincide. The cubic root of 250138829 is about 630.0771124221.

The spelling of 250138829 in words is "two hundred fifty million, one hundred thirty-eight thousand, eight hundred twenty-nine".