1499921 has 2 divisors, whose sum is σ = 1499922. Its totient is φ = 1499920.

The previous prime is 1499891. The next prime is 1499933. The reversal of 1499921 is 1299941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801025 + 698896 = 895^2 + 836^2 .

It is an emirp because it is prime and its reverse (1299941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1499921 - 2⁶ = 1499857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1499221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749960 + 749961.

It is an arithmetic number, because the mean of its divisors is an integer number (749961).

2^1499921 is an apocalyptic number.

It is an amenable number.

1499921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1499921 is an equidigital number, since it uses as much as digits as its factorization.

1499921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 35.

The square root of 1499921 is about 1224.7126193520. The cubic root of 1499921 is about 114.4694146106.

The spelling of 1499921 in words is "one million, four hundred ninety-nine thousand, nine hundred twenty-one".