1461989 has 2 divisors, whose sum is σ = 1461990. Its totient is φ = 1461988.

The previous prime is 1461979. The next prime is 1462001. The reversal of 1461989 is 9891641.

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., 1399489 + 62500 = 1183^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461989 - 2⁴ = 1461973 is a prime.

It is a super-2 number, since 2×1461989² = 4274823672242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1461979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730994 + 730995.

It is an arithmetic number, because the mean of its divisors is an integer number (730995).

2^1461989 is an apocalyptic number.

It is an amenable number.

1461989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461989 is an equidigital number, since it uses as much as digits as its factorization.

1461989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 38.

The square root of 1461989 is about 1209.1273712889. The cubic root of 1461989 is about 113.4962123624.

The spelling of 1461989 in words is "one million, four hundred sixty-one thousand, nine hundred eighty-nine".