249026491 has 8 divisors (see below), whose sum is σ = 285857280. Its totient is φ = 212509608.

The previous prime is 249026467. The next prime is 249026563. The reversal of 249026491 is 194620942.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249026491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249026491.

It is not an unprimeable number, because it can be changed into a prime (249026431) 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, 76771 + ... + 79948.

It is an arithmetic number, because the mean of its divisors is an integer number (35732160).

Almost surely, 2^249026491 is an apocalyptic number.

249026491 is a deficient number, since it is larger than the sum of its proper divisors (36830789).

249026491 is a wasteful number, since it uses less digits than its factorization.

249026491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156953.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 249026491 is about 15780.5732151909. The cubic root of 249026491 is about 629.1417649448.

The spelling of 249026491 in words is "two hundred forty-nine million, twenty-six thousand, four hundred ninety-one".