40430647 has 2 divisors, whose sum is σ = 40430648. Its totient is φ = 40430646.

The previous prime is 40430623. The next prime is 40430659. The reversal of 40430647 is 74603404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40430647 - 2⁷ = 40430519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40430447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20215323 + 20215324.

It is an arithmetic number, because the mean of its divisors is an integer number (20215324).

Almost surely, 2^40430647 is an apocalyptic number.

40430647 is a deficient number, since it is larger than the sum of its proper divisors (1).

40430647 is an equidigital number, since it uses as much as digits as its factorization.

40430647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 40430647 is about 6358.5098096960. The cubic root of 40430647 is about 343.2181376401.

The spelling of 40430647 in words is "forty million, four hundred thirty thousand, six hundred forty-seven".