40497786 has 32 divisors (see below), whose sum is σ = 102852480. Its totient is φ = 11570688.

The previous prime is 40497781. The next prime is 40497823. The reversal of 40497786 is 68779404.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40497781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53191 + ... + 53946.

It is an arithmetic number, because the mean of its divisors is an integer number (3214140).

Almost surely, 2^40497786 is an apocalyptic number.

40497786 is an abundant number, since it is smaller than the sum of its proper divisors (62354694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40497786 is a wasteful number, since it uses less digits than its factorization.

40497786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107155 (or 107149 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 40497786 is about 6363.7870800334. The cubic root of 40497786 is about 343.4080148808.

The spelling of 40497786 in words is "forty million, four hundred ninety-seven thousand, seven hundred eighty-six".