147998399 has 4 divisors (see below), whose sum is σ = 154433136. Its totient is φ = 141563664.

The previous prime is 147998393. The next prime is 147998407. The reversal of 147998399 is 993899741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993899741 = 47 ⋅21146803.

It is a cyclic number.

It is not a de Polignac number, because 147998399 - 2²⁴ = 131221183 is a prime.

It is a super-2 number, since 2×147998399² = 43807052213126402, 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 (147998393) 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, 3217334 + ... + 3217379.

It is an arithmetic number, because the mean of its divisors is an integer number (38608284).

Almost surely, 2^147998399 is an apocalyptic number.

147998399 is a deficient number, since it is larger than the sum of its proper divisors (6434737).

147998399 is an equidigital number, since it uses as much as digits as its factorization.

147998399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6434736.

The product of its digits is 4408992, while the sum is 59.

The square root of 147998399 is about 12165.4592597238. The cubic root of 147998399 is about 528.9553399190.

The spelling of 147998399 in words is "one hundred forty-seven million, nine hundred ninety-eight thousand, three hundred ninety-nine".