40689498 has 16 divisors (see below), whose sum is σ = 83111040. Its totient is φ = 13274496.

The previous prime is 40689497. The next prime is 40689557. The reversal of 40689498 is 89498604.

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 7 ways as a sum of consecutive naturals, for example, 71863 + ... + 72426.

It is an arithmetic number, because the mean of its divisors is an integer number (5194440).

Almost surely, 2^40689498 is an apocalyptic number.

40689498 is an abundant number, since it is smaller than the sum of its proper divisors (42421542).

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

40689498 is a wasteful number, since it uses less digits than its factorization.

40689498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144341.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 40689498 is about 6378.8320247519. The cubic root of 40689498 is about 343.9490471225.

The spelling of 40689498 in words is "forty million, six hundred eighty-nine thousand, four hundred ninety-eight".