40214309 has 4 divisors (see below), whose sum is σ = 40229004. Its totient is φ = 40199616.

The previous prime is 40214263. The next prime is 40214323. The reversal of 40214309 is 90341204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3648100 + 36566209 = 1910^2 + 6047^2 .

It is a cyclic number.

It is not a de Polignac number, because 40214309 - 2²⁴ = 23437093 is a prime.

It is a super-3 number, since 3×40214309³ (a number of 24 digits) contains 333 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 (40214359) 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, 1892 + ... + 9165.

It is an arithmetic number, because the mean of its divisors is an integer number (10057251).

Almost surely, 2^40214309 is an apocalyptic number.

It is an amenable number.

40214309 is a deficient number, since it is larger than the sum of its proper divisors (14695).

40214309 is a wasteful number, since it uses less digits than its factorization.

40214309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14694.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40214309 is about 6341.4753015367. The cubic root of 40214309 is about 342.6048738462.

The spelling of 40214309 in words is "forty million, two hundred fourteen thousand, three hundred nine".