8250249491 has 4 divisors (see below), whose sum is σ = 9000272184. Its totient is φ = 7500226800.

The previous prime is 8250249479. The next prime is 8250249493. The reversal of 8250249491 is 1949420528.

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

It is not a de Polignac number, because 8250249491 - 2¹⁰ = 8250248467 is a prime.

It is a super-3 number, since 3×8250249491³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8250249493) 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, 375011330 + ... + 375011351.

It is an arithmetic number, because the mean of its divisors is an integer number (2250068046).

Almost surely, 2^8250249491 is an apocalyptic number.

8250249491 is a deficient number, since it is larger than the sum of its proper divisors (750022693).

8250249491 is a wasteful number, since it uses less digits than its factorization.

8250249491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750022692.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 8250249491 is about 90830.8840152952. The cubic root of 8250249491 is about 2020.6403788535.

The spelling of 8250249491 in words is "eight billion, two hundred fifty million, two hundred forty-nine thousand, four hundred ninety-one".