7388861 has 2 divisors, whose sum is σ = 7388862. Its totient is φ = 7388860.

The previous prime is 7388851. The next prime is 7388873. The reversal of 7388861 is 1688837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4923961 + 2464900 = 2219^2 + 1570^2 .

It is an emirp because it is prime and its reverse (1688837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7388861 - 2²² = 3194557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7388831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3694430 + 3694431.

It is an arithmetic number, because the mean of its divisors is an integer number (3694431).

Almost surely, 2^7388861 is an apocalyptic number.

It is an amenable number.

7388861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7388861 is an equidigital number, since it uses as much as digits as its factorization.

7388861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 41.

The square root of 7388861 is about 2718.2459417794. The cubic root of 7388861 is about 194.7716898397.

The spelling of 7388861 in words is "seven million, three hundred eighty-eight thousand, eight hundred sixty-one".