40106408 has 8 divisors (see below), whose sum is σ = 75199530. Its totient is φ = 20053200.

The previous prime is 40106399. The next prime is 40106447. The reversal of 40106408 is 80460104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23639044 + 16467364 = 4862^2 + 4058^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2506643 + ... + 2506658.

Almost surely, 2^40106408 is an apocalyptic number.

It is an amenable number.

40106408 is a deficient number, since it is larger than the sum of its proper divisors (35093122).

40106408 is a wasteful number, since it uses less digits than its factorization.

40106408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5013307 (or 5013303 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 40106408 is about 6332.9620242032. The cubic root of 40106408 is about 342.2981793568.

The spelling of 40106408 in words is "forty million, one hundred six thousand, four hundred eight".