40689806 has 32 divisors (see below), whose sum is σ = 68620608. Its totient is φ = 17994240.

The previous prime is 40689799. The next prime is 40689839. The reversal of 40689806 is 60898604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47276 + ... + 48128.

It is an arithmetic number, because the mean of its divisors is an integer number (2144394).

Almost surely, 2^40689806 is an apocalyptic number.

40689806 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40689806 is a deficient number, since it is larger than the sum of its proper divisors (27930802).

40689806 is a wasteful number, since it uses less digits than its factorization.

40689806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 40689806 is about 6378.8561670569. The cubic root of 40689806 is about 343.9499149634.

The spelling of 40689806 in words is "forty million, six hundred eighty-nine thousand, eight hundred six".