1404630509 has 2 divisors, whose sum is σ = 1404630510. Its totient is φ = 1404630508.

The previous prime is 1404630503. The next prime is 1404630511. The reversal of 1404630509 is 9050364041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749116900 + 655513609 = 27370^2 + 25603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404630509 is a prime.

Together with 1404630511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404630503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702315254 + 702315255.

It is an arithmetic number, because the mean of its divisors is an integer number (702315255).

Almost surely, 2^1404630509 is an apocalyptic number.

It is an amenable number.

1404630509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404630509 is an equidigital number, since it uses as much as digits as its factorization.

1404630509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1404630509 is about 37478.4005661928. The cubic root of 1404630509 is about 1119.9209417516.

The spelling of 1404630509 in words is "one billion, four hundred four million, six hundred thirty thousand, five hundred nine".