40626709 has 8 divisors (see below), whose sum is σ = 43384320. Its totient is φ = 37959600.

The previous prime is 40626679. The next prime is 40626713. The reversal of 40626709 is 90762604.

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

It is a cyclic number.

It is not a de Polignac number, because 40626709 - 2⁷ = 40626581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40626739) 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, 21697 + ... + 23494.

It is an arithmetic number, because the mean of its divisors is an integer number (5423040).

Almost surely, 2^40626709 is an apocalyptic number.

It is an amenable number.

40626709 is a deficient number, since it is larger than the sum of its proper divisors (2757611).

40626709 is a wasteful number, since it uses less digits than its factorization.

40626709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45251.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 40626709 is about 6373.9084555710. The cubic root of 40626709 is about 343.7720371988.

The spelling of 40626709 in words is "forty million, six hundred twenty-six thousand, seven hundred nine".