1389249199 has 4 divisors (see below), whose sum is σ = 1496114536. Its totient is φ = 1282383864.

The previous prime is 1389249193. The next prime is 1389249217. The reversal of 1389249199 is 9919429831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9919429831 = 1229 ⋅8071139.

It is a cyclic number.

It is not a de Polignac number, because 1389249199 - 2⁵ = 1389249167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389249193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53432649 + ... + 53432674.

It is an arithmetic number, because the mean of its divisors is an integer number (374028634).

Almost surely, 2^1389249199 is an apocalyptic number.

1389249199 is a deficient number, since it is larger than the sum of its proper divisors (106865337).

1389249199 is a wasteful number, since it uses less digits than its factorization.

1389249199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106865336.

The product of its digits is 1259712, while the sum is 55.

The square root of 1389249199 is about 37272.6333789283. The cubic root of 1389249199 is about 1115.8180565126.

The spelling of 1389249199 in words is "one billion, three hundred eighty-nine million, two hundred forty-nine thousand, one hundred ninety-nine".