40945408 has 72 divisors (see below), whose sum is σ = 94988768. Its totient is φ = 17252352.

The previous prime is 40945397. The next prime is 40945409. The reversal of 40945408 is 80454904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40945409) 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, 130660 + ... + 130972.

Almost surely, 2^40945408 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 40945408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47494384).

40945408 is an abundant number, since it is smaller than the sum of its proper divisors (54043360).

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

40945408 is an equidigital number, since it uses as much as digits as its factorization.

40945408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 40945408 is about 6398.8598984507. The cubic root of 40945408 is about 344.6686112841.

The spelling of 40945408 in words is "forty million, nine hundred forty-five thousand, four hundred eight".