248491947 has 8 divisors (see below), whose sum is σ = 361442880. Its totient is φ = 150601160.

The previous prime is 248491933. The next prime is 248491949. The reversal of 248491947 is 749194842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 248491947 - 2⁷ = 248491819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 248491896 and 248491905.

It is not an unprimeable number, because it can be changed into a prime (248491949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3764997 + ... + 3765062.

It is an arithmetic number, because the mean of its divisors is an integer number (45180360).

Almost surely, 2^248491947 is an apocalyptic number.

248491947 is a deficient number, since it is larger than the sum of its proper divisors (112950933).

248491947 is a wasteful number, since it uses less digits than its factorization.

248491947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530073.

The product of its digits is 580608, while the sum is 48.

The square root of 248491947 is about 15763.6273427153. The cubic root of 248491947 is about 628.6912842603.

It can be divided in two parts, 24849 and 1947, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 248491947 in words is "two hundred forty-eight million, four hundred ninety-one thousand, nine hundred forty-seven".