250987397 has 4 divisors (see below), whose sum is σ = 264197280. Its totient is φ = 237777516.

The previous prime is 250987313. The next prime is 250987411. The reversal of 250987397 is 793789052.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 250987397 - 2¹² = 250983301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250987307) 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, 6604913 + ... + 6604950.

It is an arithmetic number, because the mean of its divisors is an integer number (66049320).

Almost surely, 2^250987397 is an apocalyptic number.

It is an amenable number.

250987397 is a deficient number, since it is larger than the sum of its proper divisors (13209883).

250987397 is a wasteful number, since it uses less digits than its factorization.

250987397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13209882.

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 250987397 is about 15842.5817656088. The cubic root of 250987397 is about 630.7887969681.

The spelling of 250987397 in words is "two hundred fifty million, nine hundred eighty-seven thousand, three hundred ninety-seven".