146943769 has 4 divisors (see below), whose sum is σ = 167935744. Its totient is φ = 125951796.

The previous prime is 146943721. The next prime is 146943779. The reversal of 146943769 is 967349641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 967349641 = 19 ⋅50913139.

It is a cyclic number.

It is not a de Polignac number, because 146943769 - 2¹⁵ = 146911001 is a prime.

It is a super-2 number, since 2×146943769² = 43184942495850722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146943779) 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, 10495977 + ... + 10495990.

It is an arithmetic number, because the mean of its divisors is an integer number (41983936).

Almost surely, 2^146943769 is an apocalyptic number.

It is an amenable number.

146943769 is a deficient number, since it is larger than the sum of its proper divisors (20991975).

146943769 is an equidigital number, since it uses as much as digits as its factorization.

146943769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20991974.

The product of its digits is 979776, while the sum is 49.

The square root of 146943769 is about 12122.0365038223. The cubic root of 146943769 is about 527.6959062103.

The spelling of 146943769 in words is "one hundred forty-six million, nine hundred forty-three thousand, seven hundred sixty-nine".