7294921 has 8 divisors (see below), whose sum is σ = 7990920. Its totient is φ = 6628608.

The previous prime is 7294913. The next prime is 7294943. The reversal of 7294921 is 1294927.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1587600 + 5707321 = 1260^2 + 2389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7294921 - 2³ = 7294913 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7294121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6906 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (998865).

Almost surely, 2^7294921 is an apocalyptic number.

It is an amenable number.

7294921 is a deficient number, since it is larger than the sum of its proper divisors (695999).

7294921 is a wasteful number, since it uses less digits than its factorization.

7294921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14843.

The product of its digits is 9072, while the sum is 34.

The square root of 7294921 is about 2700.9111425591. The cubic root of 7294921 is about 193.9427418084.

The spelling of 7294921 in words is "seven million, two hundred ninety-four thousand, nine hundred twenty-one".