40689492 has 48 divisors (see below), whose sum is σ = 98492352. Its totient is φ = 13063680.

The previous prime is 40689491. The next prime is 40689497. The reversal of 40689492 is 29498604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40689491) 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, 49767 + ... + 50577.

It is an arithmetic number, because the mean of its divisors is an integer number (2051924).

Almost surely, 2^40689492 is an apocalyptic number.

It is an amenable number.

40689492 is an abundant number, since it is smaller than the sum of its proper divisors (57802860).

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

40689492 is a wasteful number, since it uses less digits than its factorization.

40689492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 40689492 is about 6378.8315544463. The cubic root of 40689492 is about 343.9490302164.

It can be divided in two parts, 406 and 89492, that added together give a palindrome (89898).

The spelling of 40689492 in words is "forty million, six hundred eighty-nine thousand, four hundred ninety-two".