1407409 has 2 divisors, whose sum is σ = 1407410. Its totient is φ = 1407408.

The previous prime is 1407397. The next prime is 1407449. The reversal of 1407409 is 9047041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 921600 + 485809 = 960^2 + 697^2 .

It is an emirp because it is prime and its reverse (9047041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1407409 - 2⁷ = 1407281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1407449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703704 + 703705.

It is an arithmetic number, because the mean of its divisors is an integer number (703705).

2^1407409 is an apocalyptic number.

It is an amenable number.

1407409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1407409 is an equidigital number, since it uses as much as digits as its factorization.

1407409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1407409 is about 1186.3426992231. The cubic root of 1407409 is about 112.0658891637.

The spelling of 1407409 in words is "one million, four hundred seven thousand, four hundred nine".