40430509 has 8 divisors (see below), whose sum is σ = 46316480. Its totient is φ = 34572096.

The previous prime is 40430501. The next prime is 40430519. The reversal of 40430509 is 90503404.

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 40430509 - 2³ = 40430501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430501) 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, 3639 + ... + 9700.

It is an arithmetic number, because the mean of its divisors is an integer number (5789560).

Almost surely, 2^40430509 is an apocalyptic number.

It is an amenable number.

40430509 is a deficient number, since it is larger than the sum of its proper divisors (5885971).

40430509 is a wasteful number, since it uses less digits than its factorization.

40430509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13779.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40430509 is about 6358.4989580875. The cubic root of 40430509 is about 343.2177471429.

The spelling of 40430509 in words is "forty million, four hundred thirty thousand, five hundred nine".