40090344 has 64 divisors (see below), whose sum is σ = 115507200. Its totient is φ = 11358144.

The previous prime is 40090291. The next prime is 40090397. The reversal of 40090344 is 44309004.

It is an interprime number because it is at equal distance from previous prime (40090291) and next prime (40090397).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20397 + ... + 22275.

It is an arithmetic number, because the mean of its divisors is an integer number (1804800).

Almost surely, 2^40090344 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 40090344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57753600).

40090344 is an abundant number, since it is smaller than the sum of its proper divisors (75416856).

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

40090344 is a wasteful number, since it uses less digits than its factorization.

40090344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40090344 is about 6331.6936122968. The cubic root of 40090344 is about 342.2524725107.

Adding to 40090344 its reverse (44309004), we get a palindrome (84399348).

The spelling of 40090344 in words is "forty million, ninety thousand, three hundred forty-four".