249474061 has 2 divisors, whose sum is σ = 249474062. Its totient is φ = 249474060.

The previous prime is 249473999. The next prime is 249474149. The reversal of 249474061 is 160474942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137241225 + 112232836 = 11715^2 + 10594^2 .

It is a cyclic number.

It is not a de Polignac number, because 249474061 - 2²⁷ = 115256333 is a prime.

It is a super-2 number, since 2×249474061² = 124474614223663442, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249474061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249274061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124737030 + 124737031.

It is an arithmetic number, because the mean of its divisors is an integer number (124737031).

Almost surely, 2^249474061 is an apocalyptic number.

It is an amenable number.

249474061 is a deficient number, since it is larger than the sum of its proper divisors (1).

249474061 is an equidigital number, since it uses as much as digits as its factorization.

249474061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 249474061 is about 15794.7478928915. The cubic root of 249474061 is about 629.5184537210.

The spelling of 249474061 in words is "two hundred forty-nine million, four hundred seventy-four thousand, sixty-one".