12398877 has 6 divisors (see below), whose sum is σ = 17909502. Its totient is φ = 8265912.

The previous prime is 12398843. The next prime is 12398879. The reversal of 12398877 is 77889321.

It can be written as a sum of positive squares in only one way, i.e., 6610041 + 5788836 = 2571^2 + 2406^2 .

It is not a de Polignac number, because 12398877 - 2¹⁴ = 12382493 is a prime.

It is a super-2 number, since 2×12398877² = 307464301722258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12398879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 688818 + ... + 688835.

It is an arithmetic number, because the mean of its divisors is an integer number (2984917).

Almost surely, 2^12398877 is an apocalyptic number.

It is an amenable number.

12398877 is a deficient number, since it is larger than the sum of its proper divisors (5510625).

12398877 is a wasteful number, since it uses less digits than its factorization.

12398877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377659 (or 1377656 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 12398877 is about 3521.2039134364. The cubic root of 12398877 is about 231.4519179204.

The spelling of 12398877 in words is "twelve million, three hundred ninety-eight thousand, eight hundred seventy-seven".