248261947 has 4 divisors (see below), whose sum is σ = 250074216. Its totient is φ = 246449680.

The previous prime is 248261941. The next prime is 248261957. The reversal of 248261947 is 749162842.

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

It is a cyclic number.

It is not a de Polignac number, because 248261947 - 2²⁷ = 114044219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248261941) 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, 905929 + ... + 906202.

It is an arithmetic number, because the mean of its divisors is an integer number (62518554).

Almost surely, 2^248261947 is an apocalyptic number.

248261947 is a deficient number, since it is larger than the sum of its proper divisors (1812269).

248261947 is a wasteful number, since it uses less digits than its factorization.

248261947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812268.

The product of its digits is 193536, while the sum is 43.

The square root of 248261947 is about 15756.3303786129. The cubic root of 248261947 is about 628.4972556638.

The spelling of 248261947 in words is "two hundred forty-eight million, two hundred sixty-one thousand, nine hundred forty-seven".