1408692449 has 2 divisors, whose sum is σ = 1408692450. Its totient is φ = 1408692448.

The previous prime is 1408692443. The next prime is 1408692451. The reversal of 1408692449 is 9442968041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795634849 + 613057600 = 28207^2 + 24760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1408692449 is a prime.

Together with 1408692451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1408692443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704346224 + 704346225.

It is an arithmetic number, because the mean of its divisors is an integer number (704346225).

Almost surely, 2^1408692449 is an apocalyptic number.

It is an amenable number.

1408692449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408692449 is an equidigital number, since it uses as much as digits as its factorization.

1408692449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 1408692449 is about 37532.5518583536. The cubic root of 1408692449 is about 1120.9994397761. Note that the first 3 decimals are identical.

The spelling of 1408692449 in words is "one billion, four hundred eight million, six hundred ninety-two thousand, four hundred forty-nine".