8942491 has 2 divisors, whose sum is σ = 8942492. Its totient is φ = 8942490.

The previous prime is 8942473. The next prime is 8942501. The reversal of 8942491 is 1942498.

It is a happy number.

8942491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8942491 - 2⁷ = 8942363 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 8942491.

It is not a weakly prime, because it can be changed into another prime (8942891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4471245 + 4471246.

It is an arithmetic number, because the mean of its divisors is an integer number (4471246).

Almost surely, 2^8942491 is an apocalyptic number.

8942491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8942491 is an equidigital number, since it uses as much as digits as its factorization.

8942491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 8942491 is about 2990.3998060460. The cubic root of 8942491 is about 207.5643851101.

The spelling of 8942491 in words is "eight million, nine hundred forty-two thousand, four hundred ninety-one".