249311147 has 6 divisors (see below), whose sum is σ = 250065612. Its totient is φ = 248558772.

The previous prime is 249311131. The next prime is 249311159. The reversal of 249311147 is 741113942.

It is not a de Polignac number, because 249311147 - 2⁴ = 249311131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249311107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213788 + ... + 214950.

It is an arithmetic number, because the mean of its divisors is an integer number (41677602).

Almost surely, 2^249311147 is an apocalyptic number.

249311147 is a deficient number, since it is larger than the sum of its proper divisors (754465).

249311147 is an frugal number, since it uses more digits than its factorization.

249311147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 1626 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 249311147 is about 15789.5898300114. The cubic root of 249311147 is about 629.3813924417.

The spelling of 249311147 in words is "two hundred forty-nine million, three hundred eleven thousand, one hundred forty-seven".