40689258 has 8 divisors (see below), whose sum is σ = 81378528. Its totient is φ = 13563084.

The previous prime is 40689247. The next prime is 40689281. The reversal of 40689258 is 85298604.

It is a sphenic number, since it is the product of 3 distinct primes.

40689258 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3390766 + ... + 3390777.

It is an arithmetic number, because the mean of its divisors is an integer number (10172316).

Almost surely, 2^40689258 is an apocalyptic number.

40689258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40689258 is a wasteful number, since it uses less digits than its factorization.

40689258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781548.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 40689258 is about 6378.8132125028. The cubic root of 40689258 is about 343.9483708797.

The spelling of 40689258 in words is "forty million, six hundred eighty-nine thousand, two hundred fifty-eight".