172223769 has 4 divisors (see below), whose sum is σ = 229631696. Its totient is φ = 114815844.

The previous prime is 172223759. The next prime is 172223803. The reversal of 172223769 is 967322271.

172223769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 172223769 - 2¹⁹ = 171699481 is a prime.

It is a super-2 number, since 2×172223769² = 59322053217130722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172223759) 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, 28703959 + ... + 28703964.

It is an arithmetic number, because the mean of its divisors is an integer number (57407924).

Almost surely, 2^172223769 is an apocalyptic number.

It is an amenable number.

172223769 is a deficient number, since it is larger than the sum of its proper divisors (57407927).

172223769 is an equidigital number, since it uses as much as digits as its factorization.

172223769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57407926.

The product of its digits is 63504, while the sum is 39.

The square root of 172223769 is about 13123.4053888463. The cubic root of 172223769 is about 556.3708438541.

The spelling of 172223769 in words is "one hundred seventy-two million, two hundred twenty-three thousand, seven hundred sixty-nine".