40945590 has 96 divisors (see below), whose sum is σ = 123042816. Its totient is φ = 9253440.

The previous prime is 40945547. The next prime is 40945603. The reversal of 40945590 is 9554904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64575 + ... + 65205.

It is an arithmetic number, because the mean of its divisors is an integer number (1281696).

Almost surely, 2^40945590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40945590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61521408).

40945590 is an abundant number, since it is smaller than the sum of its proper divisors (82097226).

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

40945590 is a wasteful number, since it uses less digits than its factorization.

40945590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 40945590 is about 6398.8741197182. The cubic root of 40945590 is about 344.6691219608.

The spelling of 40945590 in words is "forty million, nine hundred forty-five thousand, five hundred ninety".