146978099 has 4 divisors (see below), whose sum is σ = 151719360. Its totient is φ = 142236840.

The previous prime is 146978093. The next prime is 146978113. The reversal of 146978099 is 990879641.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146978099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146978099.

It is not an unprimeable number, because it can be changed into a prime (146978093) 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 3 ways as a sum of consecutive naturals, for example, 2370584 + ... + 2370645.

It is an arithmetic number, because the mean of its divisors is an integer number (37929840).

Almost surely, 2^146978099 is an apocalyptic number.

146978099 is a deficient number, since it is larger than the sum of its proper divisors (4741261).

146978099 is an equidigital number, since it uses as much as digits as its factorization.

146978099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741260.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 146978099 is about 12123.4524373216. The cubic root of 146978099 is about 527.7369976428.

The spelling of 146978099 in words is "one hundred forty-six million, nine hundred seventy-eight thousand, ninety-nine".