4792421 has 4 divisors (see below), whose sum is σ = 4796844. Its totient is φ = 4788000.

The previous prime is 4792409. The next prime is 4792439. The reversal of 4792421 is 1242974.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 122500 + 4669921 = 350^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 4792421 - 2¹⁸ = 4530277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4792451) 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, 641 + ... + 3161.

It is an arithmetic number, because the mean of its divisors is an integer number (1199211).

Almost surely, 2^4792421 is an apocalyptic number.

It is an amenable number.

4792421 is a deficient number, since it is larger than the sum of its proper divisors (4423).

4792421 is a wasteful number, since it uses less digits than its factorization.

4792421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422.

The product of its digits is 4032, while the sum is 29.

The square root of 4792421 is about 2189.1598845219. The cubic root of 4792421 is about 168.5977032887.

The spelling of 4792421 in words is "four million, seven hundred ninety-two thousand, four hundred twenty-one".