40430029 has 4 divisors (see below), whose sum is σ = 42808284. Its totient is φ = 38051776.

The previous prime is 40430017. The next prime is 40430041. The reversal of 40430029 is 92003404.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40430017) and next prime (40430041).

It can be written as a sum of positive squares in 2 ways, for example, as 17867529 + 22562500 = 4227^2 + 4750^2 .

It is a cyclic number.

It is not a de Polignac number, because 40430029 - 2⁷ = 40429901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40429991 and 40430009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189102 + ... + 1189135.

It is an arithmetic number, because the mean of its divisors is an integer number (10702071).

Almost surely, 2^40430029 is an apocalyptic number.

It is an amenable number.

40430029 is a deficient number, since it is larger than the sum of its proper divisors (2378255).

40430029 is a wasteful number, since it uses less digits than its factorization.

40430029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378254.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 40430029 is about 6358.4612132182. The cubic root of 40430029 is about 343.2163888851.

The spelling of 40430029 in words is "forty million, four hundred thirty thousand, twenty-nine".