172077379 has 4 divisors (see below), whose sum is σ = 175324176. Its totient is φ = 168830584.

The previous prime is 172077341. The next prime is 172077403. The reversal of 172077379 is 973770271.

It is a happy number.

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 172077379 - 2¹¹ = 172075331 is a prime.

It is a super-2 number, since 2×172077379² = 59221248727019282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172077679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623319 + ... + 1623424.

It is an arithmetic number, because the mean of its divisors is an integer number (43831044).

Almost surely, 2^172077379 is an apocalyptic number.

172077379 is a deficient number, since it is larger than the sum of its proper divisors (3246797).

172077379 is an equidigital number, since it uses as much as digits as its factorization.

172077379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246796.

The product of its (nonzero) digits is 129654, while the sum is 43.

The square root of 172077379 is about 13117.8267636068. The cubic root of 172077379 is about 556.2131609824.

The spelling of 172077379 in words is "one hundred seventy-two million, seventy-seven thousand, three hundred seventy-nine".