249538071 has 4 divisors (see below), whose sum is σ = 332717432. Its totient is φ = 166358712.

The previous prime is 249538061. The next prime is 249538097. The reversal of 249538071 is 170835942.

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

It is not a de Polignac number, because 249538071 - 2⁹ = 249537559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249538021) 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, 41589676 + ... + 41589681.

It is an arithmetic number, because the mean of its divisors is an integer number (83179358).

Almost surely, 2^249538071 is an apocalyptic number.

249538071 is a deficient number, since it is larger than the sum of its proper divisors (83179361).

249538071 is an equidigital number, since it uses as much as digits as its factorization.

249538071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83179360.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 249538071 is about 15796.7740694105. The cubic root of 249538071 is about 629.5722896859.

The spelling of 249538071 in words is "two hundred forty-nine million, five hundred thirty-eight thousand, seventy-one".