7408861 has 2 divisors, whose sum is σ = 7408862. Its totient is φ = 7408860.

The previous prime is 7408853. The next prime is 7408883. The reversal of 7408861 is 1688047.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7371225 + 37636 = 2715^2 + 194^2 .

It is an emirp because it is prime and its reverse (1688047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7408861 - 2³ = 7408853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7408061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3704430 + 3704431.

It is an arithmetic number, because the mean of its divisors is an integer number (3704431).

Almost surely, 2^7408861 is an apocalyptic number.

It is an amenable number.

7408861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7408861 is an equidigital number, since it uses as much as digits as its factorization.

7408861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 7408861 is about 2721.9222986706. The cubic root of 7408861 is about 194.9472660385.

The spelling of 7408861 in words is "seven million, four hundred eight thousand, eight hundred sixty-one".