198837469 has 4 divisors (see below), whose sum is σ = 198935100. Its totient is φ = 198739840.

The previous prime is 198837439. The next prime is 198837479. The reversal of 198837469 is 964738891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 964738891 = 103 ⋅9366397.

It can be written as a sum of positive squares in 2 ways, for example, as 95062500 + 103774969 = 9750^2 + 10187^2 .

It is a cyclic number.

It is not a de Polignac number, because 198837469 - 2⁵ = 198837437 is a prime.

It is a super-2 number, since 2×198837469² = 79072678156651922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198837439) 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, 45694 + ... + 49855.

It is an arithmetic number, because the mean of its divisors is an integer number (49733775).

Almost surely, 2^198837469 is an apocalyptic number.

It is an amenable number.

198837469 is a deficient number, since it is larger than the sum of its proper divisors (97631).

198837469 is an equidigital number, since it uses as much as digits as its factorization.

198837469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97630.

The product of its digits is 2612736, while the sum is 55.

The square root of 198837469 is about 14100.9740443701. The cubic root of 198837469 is about 583.6682580222.

The spelling of 198837469 in words is "one hundred ninety-eight million, eight hundred thirty-seven thousand, four hundred sixty-nine".