1398982249 has 16 divisors (see below), whose sum is σ = 1610219520. Its totient is φ = 1190621520.

The previous prime is 1398982237. The next prime is 1398982259. The reversal of 1398982249 is 9422898931.

It is a cyclic number.

It is not a de Polignac number, because 1398982249 - 2⁷ = 1398982121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1398982249.

It is not an unprimeable number, because it can be changed into a prime (1398982259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746784 + ... + 748654.

It is an arithmetic number, because the mean of its divisors is an integer number (100638720).

Almost surely, 2^1398982249 is an apocalyptic number.

It is an amenable number.

1398982249 is a deficient number, since it is larger than the sum of its proper divisors (211237271).

1398982249 is a wasteful number, since it uses less digits than its factorization.

1398982249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580.

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

The square root of 1398982249 is about 37402.9711252997. The cubic root of 1398982249 is about 1118.4177937967.

The spelling of 1398982249 in words is "one billion, three hundred ninety-eight million, nine hundred eighty-two thousand, two hundred forty-nine".