7413847421 has 4 divisors (see below), whose sum is σ = 7420606812. Its totient is φ = 7407088032.

The previous prime is 7413847417. The next prime is 7413847447. The reversal of 7413847421 is 1247483147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3046488025 + 4367359396 = 55195^2 + 66086^2 .

It is a cyclic number.

It is not a de Polignac number, because 7413847421 - 2² = 7413847417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7413847471) 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, 3378050 + ... + 3380243.

It is an arithmetic number, because the mean of its divisors is an integer number (1855151703).

Almost surely, 2^7413847421 is an apocalyptic number.

It is an amenable number.

7413847421 is a deficient number, since it is larger than the sum of its proper divisors (6759391).

7413847421 is a wasteful number, since it uses less digits than its factorization.

7413847421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6759390.

The product of its digits is 150528, while the sum is 41.

The square root of 7413847421 is about 86103.7015522562. The cubic root of 7413847421 is about 1949.9099165924.

The spelling of 7413847421 in words is "seven billion, four hundred thirteen million, eight hundred forty-seven thousand, four hundred twenty-one".