207172229 has 4 divisors (see below), whose sum is σ = 226006080. Its totient is φ = 188338380.

The previous prime is 207172211. The next prime is 207172261. The reversal of 207172229 is 922271702.

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 a cyclic number.

It is not a de Polignac number, because 207172229 - 2¹⁶ = 207106693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 207172195 and 207172204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207172429) 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, 9416909 + ... + 9416930.

It is an arithmetic number, because the mean of its divisors is an integer number (56501520).

Almost surely, 2^207172229 is an apocalyptic number.

It is an amenable number.

207172229 is a deficient number, since it is larger than the sum of its proper divisors (18833851).

207172229 is a wasteful number, since it uses less digits than its factorization.

207172229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18833850.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 207172229 is about 14393.4786969655. The cubic root of 207172229 is about 591.7121852789.

The spelling of 207172229 in words is "two hundred seven million, one hundred seventy-two thousand, two hundred twenty-nine".