389998349 has 4 divisors (see below), whose sum is σ = 419998236. Its totient is φ = 359998464.

The previous prime is 389998333. The next prime is 389998363. The reversal of 389998349 is 943899983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32410249 + 357588100 = 5693^2 + 18910^2 .

It is a cyclic number.

It is not a de Polignac number, because 389998349 - 2⁴ = 389998333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389998291 and 389998300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389998379) 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, 14999924 + ... + 14999949.

It is an arithmetic number, because the mean of its divisors is an integer number (104999559).

Almost surely, 2^389998349 is an apocalyptic number.

It is an amenable number.

389998349 is a deficient number, since it is larger than the sum of its proper divisors (29999887).

389998349 is a wasteful number, since it uses less digits than its factorization.

389998349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29999886.

The product of its digits is 15116544, while the sum is 62.

The square root of 389998349 is about 19748.3758572699. The cubic root of 389998349 is about 730.6133264268.

The spelling of 389998349 in words is "three hundred eighty-nine million, nine hundred ninety-eight thousand, three hundred forty-nine".