40291016 has 16 divisors (see below), whose sum is σ = 75807900. Its totient is φ = 20075584.

The previous prime is 40291007. The next prime is 40291033. The reversal of 40291016 is 61019204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29702500 + 10588516 = 5450^2 + 3254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40290982 and 40291000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6251 + ... + 10938.

Almost surely, 2^40291016 is an apocalyptic number.

It is an amenable number.

40291016 is a deficient number, since it is larger than the sum of its proper divisors (35516884).

40291016 is a wasteful number, since it uses less digits than its factorization.

40291016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17488 (or 17484 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 40291016 is about 6347.5204607784. The cubic root of 40291016 is about 342.8225699927.

The spelling of 40291016 in words is "forty million, two hundred ninety-one thousand, sixteen".