40905472 has 18 divisors (see below), whose sum is σ = 81651668. Its totient is φ = 20452608.

The previous prime is 40905439. The next prime is 40905479. The reversal of 40905472 is 27450904.

It is not an unprimeable number, because it can be changed into a prime (40905479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79638 + ... + 80149.

Almost surely, 2^40905472 is an apocalyptic number.

It is an amenable number.

40905472 is a deficient number, since it is larger than the sum of its proper divisors (40746196).

40905472 is an equidigital number, since it uses as much as digits as its factorization.

40905472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159803 (or 159789 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 40905472 is about 6395.7385812743. The cubic root of 40905472 is about 344.5565176137.

The spelling of 40905472 in words is "forty million, nine hundred five thousand, four hundred seventy-two".