249078493 has 4 divisors (see below), whose sum is σ = 249831328. Its totient is φ = 248325660.

The previous prime is 249078469. The next prime is 249078499. The reversal of 249078493 is 394870942.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 249078493 - 2⁵ = 249078461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249078499) 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, 375921 + ... + 376582.

It is an arithmetic number, because the mean of its divisors is an integer number (62457832).

Almost surely, 2^249078493 is an apocalyptic number.

It is an amenable number.

249078493 is a deficient number, since it is larger than the sum of its proper divisors (752835).

249078493 is an equidigital number, since it uses as much as digits as its factorization.

249078493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752834.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 249078493 is about 15782.2207879626. The cubic root of 249078493 is about 629.1855546006.

It can be divided in two parts, 249078 and 493, that added together give a triangular number (249571 = T₇₀₆).

The spelling of 249078493 in words is "two hundred forty-nine million, seventy-eight thousand, four hundred ninety-three".