7469921 has 2 divisors, whose sum is σ = 7469922. Its totient is φ = 7469920.

The previous prime is 7469911. The next prime is 7469923. The reversal of 7469921 is 1299647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4157521 + 3312400 = 2039^2 + 1820^2 .

It is an emirp because it is prime and its reverse (1299647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7469921 - 2⁶ = 7469857 is a prime.

Together with 7469923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7469923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3734960 + 3734961.

It is an arithmetic number, because the mean of its divisors is an integer number (3734961).

Almost surely, 2^7469921 is an apocalyptic number.

It is an amenable number.

7469921 is a deficient number, since it is larger than the sum of its proper divisors (1).

7469921 is an equidigital number, since it uses as much as digits as its factorization.

7469921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 7469921 is about 2733.1156214108. The cubic root of 7469921 is about 195.4813530007.

The spelling of 7469921 in words is "seven million, four hundred sixty-nine thousand, nine hundred twenty-one".