1274389 has 2 divisors, whose sum is σ = 1274390. Its totient is φ = 1274388.

The previous prime is 1274381. The next prime is 1274401. The reversal of 1274389 is 9834721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034289 + 240100 = 1017^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 1274389 - 2³ = 1274381 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1274381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637194 + 637195.

It is an arithmetic number, because the mean of its divisors is an integer number (637195).

2^1274389 is an apocalyptic number.

It is an amenable number.

1274389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274389 is an equidigital number, since it uses as much as digits as its factorization.

1274389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 1274389 is about 1128.8883912947. Note that the first 3 decimals coincide. The cubic root of 1274389 is about 108.4178202209.

The spelling of 1274389 in words is "one million, two hundred seventy-four thousand, three hundred eighty-nine".