172094947 has 4 divisors (see below), whose sum is σ = 179577360. Its totient is φ = 164612536.

The previous prime is 172094941. The next prime is 172094957. The reversal of 172094947 is 749490271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172094947 - 2²³ = 163706339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172094941) 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, 3741172 + ... + 3741217.

It is an arithmetic number, because the mean of its divisors is an integer number (44894340).

Almost surely, 2^172094947 is an apocalyptic number.

172094947 is a deficient number, since it is larger than the sum of its proper divisors (7482413).

172094947 is an equidigital number, since it uses as much as digits as its factorization.

172094947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482412.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 172094947 is about 13118.4963696302. The cubic root of 172094947 is about 556.2320889406.

The spelling of 172094947 in words is "one hundred seventy-two million, ninety-four thousand, nine hundred forty-seven".