5428633921 has 4 divisors (see below), whose sum is σ = 5435532592. Its totient is φ = 5421735252.

The previous prime is 5428633909. The next prime is 5428633927. The reversal of 5428633921 is 1293368245.

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-5428633921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5428633927) 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, 3448155 + ... + 3449728.

It is an arithmetic number, because the mean of its divisors is an integer number (1358883148).

Almost surely, 2^5428633921 is an apocalyptic number.

It is an amenable number.

5428633921 is a deficient number, since it is larger than the sum of its proper divisors (6898671).

5428633921 is an equidigital number, since it uses as much as digits as its factorization.

5428633921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6898670.

The product of its digits is 311040, while the sum is 43.

The square root of 5428633921 is about 73679.2638467568. The cubic root of 5428633921 is about 1757.5061443830.

The spelling of 5428633921 in words is "five billion, four hundred twenty-eight million, six hundred thirty-three thousand, nine hundred twenty-one".