2489671 has 2 divisors, whose sum is σ = 2489672. Its totient is φ = 2489670.

The previous prime is 2489659. The next prime is 2489687. The reversal of 2489671 is 1769842.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2489671 - 2⁵ = 2489639 is a prime.

2489671 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2489671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2489611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244835 + 1244836.

It is an arithmetic number, because the mean of its divisors is an integer number (1244836).

2^2489671 is an apocalyptic number.

2489671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2489671 is an equidigital number, since it uses as much as digits as its factorization.

2489671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 2489671 is about 1577.8691327230. The cubic root of 2489671 is about 135.5337080211.

It can be divided in two parts, 2489 and 671, that added together give a triangular number (3160 = T₇₉).

The spelling of 2489671 in words is "two million, four hundred eighty-nine thousand, six hundred seventy-one".