40014309 has 8 divisors (see below), whose sum is σ = 53632512. Its totient is φ = 26536160.

The previous prime is 40014283. The next prime is 40014313. The reversal of 40014309 is 90341004.

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 40014309 - 2⁹ = 40013797 is a prime.

It is a super-2 number, since 2×40014309² = 3202289849494962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40014329) 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, 34344 + ... + 35489.

It is an arithmetic number, because the mean of its divisors is an integer number (6704064).

Almost surely, 2^40014309 is an apocalyptic number.

It is an amenable number.

40014309 is a deficient number, since it is larger than the sum of its proper divisors (13618203).

40014309 is a wasteful number, since it uses less digits than its factorization.

40014309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70027.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40014309 is about 6325.6864449639. The cubic root of 40014309 is about 342.0359645500.

The spelling of 40014309 in words is "forty million, fourteen thousand, three hundred nine".