40521416 has 16 divisors (see below), whose sum is σ = 81822300. Its totient is φ = 18702144.

The previous prime is 40521413. The next prime is 40521427. The reversal of 40521416 is 61412504.

It can be written as a sum of positive squares in 2 ways, for example, as 40322500 + 198916 = 6350^2 + 446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40521391 and 40521400.

It is not an unprimeable number, because it can be changed into a prime (40521413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194711 + ... + 194918.

Almost surely, 2^40521416 is an apocalyptic number.

It is an amenable number.

40521416 is an abundant number, since it is smaller than the sum of its proper divisors (41300884).

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

40521416 is a wasteful number, since it uses less digits than its factorization.

40521416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389648 (or 389644 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 40521416 is about 6365.6434081717. The cubic root of 40521416 is about 343.4747934582.

The spelling of 40521416 in words is "forty million, five hundred twenty-one thousand, four hundred sixteen".