40891596 has 48 divisors (see below), whose sum is σ = 103511520. Its totient is φ = 12513280.

The previous prime is 40891583. The next prime is 40891597. The reversal of 40891596 is 69519804.

It is not an unprimeable number, because it can be changed into a prime (40891597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5920 + ... + 10808.

It is an arithmetic number, because the mean of its divisors is an integer number (2156490).

Almost surely, 2^40891596 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 40891596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51755760).

40891596 is an abundant number, since it is smaller than the sum of its proper divisors (62619924).

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

40891596 is a wasteful number, since it uses less digits than its factorization.

40891596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954 (or 4952 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 40891596 is about 6394.6537044628. The cubic root of 40891596 is about 344.5175529250.

The spelling of 40891596 in words is "forty million, eight hundred ninety-one thousand, five hundred ninety-six".