40069906 has 8 divisors (see below), whose sum is σ = 60865920. Its totient is φ = 19781268.

The previous prime is 40069889. The next prime is 40069921. The reversal of 40069906 is 60996004.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 126646 + ... + 126961.

It is an arithmetic number, because the mean of its divisors is an integer number (7608240).

Almost surely, 2^40069906 is an apocalyptic number.

40069906 is a deficient number, since it is larger than the sum of its proper divisors (20796014).

40069906 is a wasteful number, since it uses less digits than its factorization.

40069906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253688.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 40069906 is about 6330.0794623764. The cubic root of 40069906 is about 342.1943026844.

The spelling of 40069906 in words is "forty million, sixty-nine thousand, nine hundred six".