40730429 has 2 divisors, whose sum is σ = 40730430. Its totient is φ = 40730428.

The previous prime is 40730411. The next prime is 40730461. The reversal of 40730429 is 92403704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31058329 + 9672100 = 5573^2 + 3110^2 .

It is a cyclic number.

It is not a de Polignac number, because 40730429 - 2¹² = 40726333 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40730479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20365214 + 20365215.

It is an arithmetic number, because the mean of its divisors is an integer number (20365215).

Almost surely, 2^40730429 is an apocalyptic number.

It is an amenable number.

40730429 is a deficient number, since it is larger than the sum of its proper divisors (1).

40730429 is an equidigital number, since it uses as much as digits as its factorization.

40730429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 40730429 is about 6382.0395642772. The cubic root of 40730429 is about 344.0643386285.

The spelling of 40730429 in words is "forty million, seven hundred thirty thousand, four hundred twenty-nine".