40489392 has 40 divisors (see below), whose sum is σ = 105868224. Its totient is φ = 13332544.

The previous prime is 40489381. The next prime is 40489417. The reversal of 40489392 is 29398404.

It is a self number, because there is not a number n which added to its sum of digits gives 40489392.

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, 1098 + ... + 9065.

Almost surely, 2^40489392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40489392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52934112).

40489392 is an abundant number, since it is smaller than the sum of its proper divisors (65378832).

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

40489392 is a wasteful number, since it uses less digits than its factorization.

40489392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10257 (or 10251 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 40489392 is about 6363.1275329039. The cubic root of 40489392 is about 343.3842871141.

The spelling of 40489392 in words is "forty million, four hundred eighty-nine thousand, three hundred ninety-two".