438949240 has 32 divisors (see below), whose sum is σ = 990596880. Its totient is φ = 175053312.

The previous prime is 438949207. The next prime is 438949279. The reversal of 438949240 is 42949834.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2802 + ... + 29761.

Almost surely, 2^438949240 is an apocalyptic number.

438949240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

438949240 is an abundant number, since it is smaller than the sum of its proper divisors (551647640).

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

438949240 is a wasteful number, since it uses less digits than its factorization.

438949240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32911 (or 32907 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 438949240 is about 20951.1154834295. The cubic root of 438949240 is about 759.9845564729.

The spelling of 438949240 in words is "four hundred thirty-eight million, nine hundred forty-nine thousand, two hundred forty".