172379946 has 16 divisors (see below), whose sum is σ = 350604000. Its totient is φ = 56485968.

The previous prime is 172379927. The next prime is 172379947. The reversal of 172379946 is 649973271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 172379895 and 172379904.

It is not an unprimeable number, because it can be changed into a prime (172379947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243121 + ... + 243828.

It is an arithmetic number, because the mean of its divisors is an integer number (21912750).

Almost surely, 2^172379946 is an apocalyptic number.

172379946 is an abundant number, since it is smaller than the sum of its proper divisors (178224054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172379946 is a wasteful number, since it uses less digits than its factorization.

172379946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487013.

The product of its digits is 571536, while the sum is 48.

The square root of 172379946 is about 13129.3543634103. The cubic root of 172379946 is about 556.5389702352.

The spelling of 172379946 in words is "one hundred seventy-two million, three hundred seventy-nine thousand, nine hundred forty-six".