249497406 has 24 divisors (see below), whose sum is σ = 572377104. Its totient is φ = 78273600.

The previous prime is 249497387. The next prime is 249497407. The reversal of 249497406 is 604794942.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249497407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407370 + ... + 407981.

It is an arithmetic number, because the mean of its divisors is an integer number (23849046).

Almost surely, 2^249497406 is an apocalyptic number.

249497406 is an abundant number, since it is smaller than the sum of its proper divisors (322879698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249497406 is a wasteful number, since it uses less digits than its factorization.

249497406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815376 (or 815373 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 249497406 is about 15795.4868870827. The cubic root of 249497406 is about 629.5380892292.

The spelling of 249497406 in words is "two hundred forty-nine million, four hundred ninety-seven thousand, four hundred six".