40858709 has 8 divisors (see below), whose sum is σ = 42340320. Its totient is φ = 39382000.

The previous prime is 40858687. The next prime is 40858711. The reversal of 40858709 is 90785804.

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

It is not a de Polignac number, because 40858709 - 2⁸ = 40858453 is a prime.

It is a super-2 number, since 2×40858709² = 3338868202293362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40858799) 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, 27434 + ... + 28884.

It is an arithmetic number, because the mean of its divisors is an integer number (5292540).

Almost surely, 2^40858709 is an apocalyptic number.

It is an amenable number.

40858709 is a deficient number, since it is larger than the sum of its proper divisors (1481611).

40858709 is a wasteful number, since it uses less digits than its factorization.

40858709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 40858709 is about 6392.0817422808. The cubic root of 40858709 is about 344.4251689256.

The spelling of 40858709 in words is "forty million, eight hundred fifty-eight thousand, seven hundred nine".