40065494 has 16 divisors (see below), whose sum is σ = 71670528. Its totient is φ = 16424232.

The previous prime is 40065491. The next prime is 40065503. The reversal of 40065494 is 49456004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40065494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40065491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61892 + ... + 62535.

It is an arithmetic number, because the mean of its divisors is an integer number (4479408).

Almost surely, 2^40065494 is an apocalyptic number.

40065494 is a deficient number, since it is larger than the sum of its proper divisors (31605034).

40065494 is a wasteful number, since it uses less digits than its factorization.

40065494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124459.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 40065494 is about 6329.7309579476. The cubic root of 40065494 is about 342.1817428290.

The spelling of 40065494 in words is "forty million, sixty-five thousand, four hundred ninety-four".