4001429 has 4 divisors (see below), whose sum is σ = 4052160. Its totient is φ = 3950700.

The previous prime is 4001411. The next prime is 4001453. The reversal of 4001429 is 9241004.

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 a de Polignac number, because none of the positive numbers 2^k-4001429 is a prime.

It is a super-2 number, since 2×4001429² = 32022868084082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4001429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001029) 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, 25247 + ... + 25404.

It is an arithmetic number, because the mean of its divisors is an integer number (1013040).

Almost surely, 2^4001429 is an apocalyptic number.

It is an amenable number.

4001429 is a deficient number, since it is larger than the sum of its proper divisors (50731).

4001429 is an equidigital number, since it uses as much as digits as its factorization.

4001429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50730.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 4001429 is about 2000.3572180988. The cubic root of 4001429 is about 158.7590062471.

The spelling of 4001429 in words is "four million, one thousand, four hundred twenty-nine".