4989451 has 2 divisors, whose sum is σ = 4989452. Its totient is φ = 4989450.

The previous prime is 4989443. The next prime is 4989461. The reversal of 4989451 is 1549894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4989451 - 2³ = 4989443 is a prime.

It is not a weakly prime, because it can be changed into another prime (4989431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494725 + 2494726.

It is an arithmetic number, because the mean of its divisors is an integer number (2494726).

Almost surely, 2^4989451 is an apocalyptic number.

4989451 is a deficient number, since it is larger than the sum of its proper divisors (1).

4989451 is an equidigital number, since it uses as much as digits as its factorization.

4989451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 4989451 is about 2233.7079039122. The cubic root of 4989451 is about 170.8772530873.

The spelling of 4989451 in words is "four million, nine hundred eighty-nine thousand, four hundred fifty-one".