172432949 has 4 divisors (see below), whose sum is σ = 185697036. Its totient is φ = 159168864.

The previous prime is 172432937. The next prime is 172432951. The reversal of 172432949 is 949234271.

172432949 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 an emirpimes, since its reverse is a distinct semiprime: 949234271 = 1619 ⋅586309.

It can be written as a sum of positive squares in 2 ways, for example, as 10048900 + 162384049 = 3170^2 + 12743^2 .

It is a cyclic number.

It is not a de Polignac number, because 172432949 - 2⁴ = 172432933 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 (172432919) 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, 6632024 + ... + 6632049.

It is an arithmetic number, because the mean of its divisors is an integer number (46424259).

Almost surely, 2^172432949 is an apocalyptic number.

It is an amenable number.

172432949 is a deficient number, since it is larger than the sum of its proper divisors (13264087).

172432949 is a wasteful number, since it uses less digits than its factorization.

172432949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13264086.

The product of its digits is 108864, while the sum is 41.

The square root of 172432949 is about 13131.3727005215. The cubic root of 172432949 is about 556.5960055089.

The spelling of 172432949 in words is "one hundred seventy-two million, four hundred thirty-two thousand, nine hundred forty-nine".