7484921 has 4 divisors (see below), whose sum is σ = 7553700. Its totient is φ = 7416144.

The previous prime is 7484899. The next prime is 7484923. The reversal of 7484921 is 1294847.

7484921 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 an emirpimes, since its reverse is a distinct semiprime: 1294847 = 61 ⋅21227.

It can be written as a sum of positive squares in 2 ways, for example, as 6786025 + 698896 = 2605^2 + 836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7484921 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (7484923) 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, 34226 + ... + 34443.

It is an arithmetic number, because the mean of its divisors is an integer number (1888425).

Almost surely, 2^7484921 is an apocalyptic number.

It is an amenable number.

7484921 is a deficient number, since it is larger than the sum of its proper divisors (68779).

7484921 is a wasteful number, since it uses less digits than its factorization.

7484921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68778.

The product of its digits is 16128, while the sum is 35.

The square root of 7484921 is about 2735.8583662171. The cubic root of 7484921 is about 195.6121111795.

The spelling of 7484921 in words is "seven million, four hundred eighty-four thousand, nine hundred twenty-one".