40898440 has 32 divisors (see below), whose sum is σ = 100388160. Its totient is φ = 14872000.

The previous prime is 40898399. The next prime is 40898441. The reversal of 40898440 is 4489804.

It is a self number, because there is not a number n which added to its sum of digits gives 40898440.

It is not an unprimeable number, because it can be changed into a prime (40898441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46036 + ... + 46915.

It is an arithmetic number, because the mean of its divisors is an integer number (3137130).

Almost surely, 2^40898440 is an apocalyptic number.

40898440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40898440 is an abundant number, since it is smaller than the sum of its proper divisors (59489720).

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

40898440 is a wasteful number, since it uses less digits than its factorization.

40898440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92973 (or 92969 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 40898440 is about 6395.1888166027. The cubic root of 40898440 is about 344.5367724128.

The spelling of 40898440 in words is "forty million, eight hundred ninety-eight thousand, four hundred forty".