1408813949 has 2 divisors, whose sum is σ = 1408813950. Its totient is φ = 1408813948.

The previous prime is 1408813937. The next prime is 1408813999. The reversal of 1408813949 is 9493188041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855153049 + 553660900 = 29243^2 + 23530^2 .

It is an emirp because it is prime and its reverse (9493188041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1408813949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1408813999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704406974 + 704406975.

It is an arithmetic number, because the mean of its divisors is an integer number (704406975).

Almost surely, 2^1408813949 is an apocalyptic number.

It is an amenable number.

1408813949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408813949 is an equidigital number, since it uses as much as digits as its factorization.

1408813949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 1408813949 is about 37534.1704184334. The cubic root of 1408813949 is about 1121.0316676567.

The spelling of 1408813949 in words is "one billion, four hundred eight million, eight hundred thirteen thousand, nine hundred forty-nine".