40430399 has 8 divisors (see below), whose sum is σ = 41437440. Its totient is φ = 39434200.

The previous prime is 40430371. The next prime is 40430419. The reversal of 40430399 is 99303404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40430399 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 (40430339) 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, 5114 + ... + 10344.

It is an arithmetic number, because the mean of its divisors is an integer number (5179680).

Almost surely, 2^40430399 is an apocalyptic number.

40430399 is a deficient number, since it is larger than the sum of its proper divisors (1007041).

40430399 is a wasteful number, since it uses less digits than its factorization.

40430399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 40430399 is about 6358.4903082414. The cubic root of 40430399 is about 343.2174358765.

It can be divided in two parts, 404 and 30399, that added together give a palindrome (30803).

The spelling of 40430399 in words is "forty million, four hundred thirty thousand, three hundred ninety-nine".