1340929 has 2 divisors, whose sum is σ = 1340930. Its totient is φ = 1340928.

The previous prime is 1340903. The next prime is 1340947. The reversal of 1340929 is 9290431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 898704 + 442225 = 948^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340929 - 2⁵ = 1340897 is a prime.

It is a super-3 number, since 3×1340929³ = 7233335422279755267, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1340897 and 1340906.

It is not a weakly prime, because it can be changed into another prime (1340959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670464 + 670465.

It is an arithmetic number, because the mean of its divisors is an integer number (670465).

2^1340929 is an apocalyptic number.

It is an amenable number.

1340929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340929 is an equidigital number, since it uses as much as digits as its factorization.

1340929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1340929 is about 1157.9848876389. The cubic root of 1340929 is about 110.2728488250.

The spelling of 1340929 in words is "one million, three hundred forty thousand, nine hundred twenty-nine".