4290009421 has 4 divisors (see below), whose sum is σ = 4307101344. Its totient is φ = 4272917500.

The previous prime is 4290009391. The next prime is 4290009467. The reversal of 4290009421 is 1249000924.

It is a happy number.

4290009421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4290009421 - 2⁹ = 4290008909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4290009491) 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, 8545585 + ... + 8546086.

It is an arithmetic number, because the mean of its divisors is an integer number (1076775336).

Almost surely, 2^4290009421 is an apocalyptic number.

It is an amenable number.

4290009421 is a deficient number, since it is larger than the sum of its proper divisors (17091923).

4290009421 is a wasteful number, since it uses less digits than its factorization.

4290009421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17091922.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4290009421 is about 65498.1634933377. The cubic root of 4290009421 is about 1624.8729741811.

The spelling of 4290009421 in words is "four billion, two hundred ninety million, nine thousand, four hundred twenty-one".