40308806 has 4 divisors (see below), whose sum is σ = 60463212. Its totient is φ = 20154402.

The previous prime is 40308791. The next prime is 40308839. The reversal of 40308806 is 60880304.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40308806² = 3249599682291272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077200 + ... + 10077203.

It is an arithmetic number, because the mean of its divisors is an integer number (15115803).

Almost surely, 2^40308806 is an apocalyptic number.

40308806 is a deficient number, since it is larger than the sum of its proper divisors (20154406).

40308806 is a wasteful number, since it uses less digits than its factorization.

40308806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20154405.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40308806 is about 6348.9216407198. The cubic root of 40308806 is about 342.8730189242.

It can be divided in two parts, 40308 and 806, that added together give a palindrome (41114).

The spelling of 40308806 in words is "forty million, three hundred eight thousand, eight hundred six".