1499881 has 2 divisors, whose sum is σ = 1499882. Its totient is φ = 1499880.

The previous prime is 1499857. The next prime is 1499891. The reversal of 1499881 is 1889941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 234256 = 1125^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 1499881 - 2⁹ = 1499369 is a prime.

It is a super-2 number, since 2×1499881² = 4499286028322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1499831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749940 + 749941.

It is an arithmetic number, because the mean of its divisors is an integer number (749941).

2^1499881 is an apocalyptic number.

It is an amenable number.

1499881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1499881 is an equidigital number, since it uses as much as digits as its factorization.

1499881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 40.

The square root of 1499881 is about 1224.6962888815. The cubic root of 1499881 is about 114.4683970421.

The spelling of 1499881 in words is "one million, four hundred ninety-nine thousand, eight hundred eighty-one".