40687259 has 4 divisors (see below), whose sum is σ = 40705080. Its totient is φ = 40669440.

The previous prime is 40687249. The next prime is 40687271. The reversal of 40687259 is 95278604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40687259 - 2⁴ = 40687243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40687249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4877 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (10176270).

Almost surely, 2^40687259 is an apocalyptic number.

40687259 is a deficient number, since it is larger than the sum of its proper divisors (17821).

40687259 is a wasteful number, since it uses less digits than its factorization.

40687259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17820.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 40687259 is about 6378.6565199891. The cubic root of 40687259 is about 343.9427382379.

The spelling of 40687259 in words is "forty million, six hundred eighty-seven thousand, two hundred fifty-nine".