146722879 has 4 divisors (see below), whose sum is σ = 148235584. Its totient is φ = 145210176.

The previous prime is 146722853. The next prime is 146722889. The reversal of 146722879 is 978227641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978227641 = 193 ⋅5068537.

It is a cyclic number.

It is not a de Polignac number, because 146722879 - 2⁵ = 146722847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146722889) 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, 756207 + ... + 756400.

It is an arithmetic number, because the mean of its divisors is an integer number (37058896).

Almost surely, 2^146722879 is an apocalyptic number.

146722879 is a deficient number, since it is larger than the sum of its proper divisors (1512705).

146722879 is an equidigital number, since it uses as much as digits as its factorization.

146722879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512704.

The product of its digits is 338688, while the sum is 46.

The square root of 146722879 is about 12112.9219843934. The cubic root of 146722879 is about 527.4313578389.

The spelling of 146722879 in words is "one hundred forty-six million, seven hundred twenty-two thousand, eight hundred seventy-nine".