429190721 has 12 divisors (see below), whose sum is σ = 463668240. Its totient is φ = 397081920.

The previous prime is 429190711. The next prime is 429190733. The reversal of 429190721 is 127091924.

It is not a de Polignac number, because 429190721 - 2¹⁰ = 429189697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (429190711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4466 + ... + 29636.

It is an arithmetic number, because the mean of its divisors is an integer number (38639020).

Almost surely, 2^429190721 is an apocalyptic number.

It is an amenable number.

429190721 is a deficient number, since it is larger than the sum of its proper divisors (34477519).

429190721 is a wasteful number, since it uses less digits than its factorization.

429190721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25264 (or 25247 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 429190721 is about 20716.9187139401. The cubic root of 429190721 is about 754.3104216358.

The spelling of 429190721 in words is "four hundred twenty-nine million, one hundred ninety thousand, seven hundred twenty-one".