1408939849 has 6 divisors (see below), whose sum is σ = 1442469786. Its totient is φ = 1376172000.

The previous prime is 1408939837. The next prime is 1408939891. The reversal of 1408939849 is 9489398041.

It can be written as a sum of positive squares in only one way, i.e., 1351665225 + 57274624 = 36765^2 + 7568^2 .

It is not a de Polignac number, because 1408939849 - 2²⁷ = 1274722121 is a prime.

It is a super-2 number, since 2×1408939849² = 3970222996200285602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1408939849.

It is not an unprimeable number, because it can be changed into a prime (1408939249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 379152 + ... + 382849.

It is an arithmetic number, because the mean of its divisors is an integer number (240411631).

Almost surely, 2^1408939849 is an apocalyptic number.

It is an amenable number.

1408939849 is a deficient number, since it is larger than the sum of its proper divisors (33529937).

1408939849 is an frugal number, since it uses more digits than its factorization.

1408939849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762087 (or 762044 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 1408939849 is about 37535.8475194047. The cubic root of 1408939849 is about 1121.0650606828.

The spelling of 1408939849 in words is "one billion, four hundred eight million, nine hundred thirty-nine thousand, eight hundred forty-nine".