40000429 has 4 divisors (see below), whose sum is σ = 45714784. Its totient is φ = 34286076.

The previous prime is 40000421. The next prime is 40000451. The reversal of 40000429 is 92400004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40000429 - 2³ = 40000421 is a prime.

It is a Duffinian number.

40000429 is a modest number, since divided by 429 gives 40 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000421) 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, 2857167 + ... + 2857180.

It is an arithmetic number, because the mean of its divisors is an integer number (11428696).

Almost surely, 2^40000429 is an apocalyptic number.

It is an amenable number.

40000429 is a deficient number, since it is larger than the sum of its proper divisors (5714355).

40000429 is an equidigital number, since it uses as much as digits as its factorization.

40000429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714354.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40000429 is about 6324.5892356737. The cubic root of 40000429 is about 341.9964119638.

The spelling of 40000429 in words is "forty million, four hundred twenty-nine", and thus it is an aban number.