40430339 has 2 divisors, whose sum is σ = 40430340. Its totient is φ = 40430338.

The previous prime is 40430287. The next prime is 40430353. The reversal of 40430339 is 93303404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40430339 is a prime.

It is a super-2 number, since 2×40430339² = 3269224623309842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40430359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20215169 + 20215170.

It is an arithmetic number, because the mean of its divisors is an integer number (20215170).

Almost surely, 2^40430339 is an apocalyptic number.

40430339 is a deficient number, since it is larger than the sum of its proper divisors (1).

40430339 is an equidigital number, since it uses as much as digits as its factorization.

40430339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 40430339 is about 6358.4855901386. The cubic root of 40430339 is about 343.2172660945.

The spelling of 40430339 in words is "forty million, four hundred thirty thousand, three hundred thirty-nine".