172973914 has 4 divisors (see below), whose sum is σ = 259460874. Its totient is φ = 86486956.

The previous prime is 172973887. The next prime is 172973921. The reversal of 172973914 is 419379271.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 419379271 = 317 ⋅1322963.

It can be written as a sum of positive squares in only one way, i.e., 171164889 + 1809025 = 13083^2 + 1345^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43243477 + ... + 43243480.

Almost surely, 2^172973914 is an apocalyptic number.

172973914 is a deficient number, since it is larger than the sum of its proper divisors (86486960).

172973914 is an equidigital number, since it uses as much as digits as its factorization.

172973914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86486959.

The product of its digits is 95256, while the sum is 43.

The square root of 172973914 is about 13151.9547596546. The cubic root of 172973914 is about 557.1774578618.

The spelling of 172973914 in words is "one hundred seventy-two million, nine hundred seventy-three thousand, nine hundred fourteen".