249469061 has 4 divisors (see below), whose sum is σ = 251143500. Its totient is φ = 247794624.

The previous prime is 249469043. The next prime is 249469081. The reversal of 249469061 is 160964942.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20884900 + 228584161 = 4570^2 + 15119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249469061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249469081) 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, 836996 + ... + 837293.

It is an arithmetic number, because the mean of its divisors is an integer number (62785875).

Almost surely, 2^249469061 is an apocalyptic number.

It is an amenable number.

249469061 is a deficient number, since it is larger than the sum of its proper divisors (1674439).

249469061 is a wasteful number, since it uses less digits than its factorization.

249469061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674438.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 249469061 is about 15794.5896116360. The cubic root of 249469061 is about 629.5142480556.

The spelling of 249469061 in words is "two hundred forty-nine million, four hundred sixty-nine thousand, sixty-one".