249341940 has 72 divisors (see below), whose sum is σ = 796155360. Its totient is φ = 62990784.

The previous prime is 249341899. The next prime is 249341977. The reversal of 249341940 is 49143942.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 249341895 and 249341904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33034 + ... + 39873.

Almost surely, 2^249341940 is an apocalyptic number.

249341940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249341940 is an abundant number, since it is smaller than the sum of its proper divisors (546813420).

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

249341940 is a wasteful number, since it uses less digits than its factorization.

249341940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72941 (or 72936 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 249341940 is about 15790.5649043978. The cubic root of 249341940 is about 629.4073034952.

The spelling of 249341940 in words is "two hundred forty-nine million, three hundred forty-one thousand, nine hundred forty".