80172893 has 4 divisors (see below), whose sum is σ = 80580060. Its totient is φ = 79765728.

The previous prime is 80172887. The next prime is 80172899. The reversal of 80172893 is 39827108.

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

It is an interprime number because it is at equal distance from previous prime (80172887) and next prime (80172899).

It can be written as a sum of positive squares in 2 ways, for example, as 57486724 + 22686169 = 7582^2 + 4763^2 .

It is a cyclic number.

It is not a de Polignac number, because 80172893 - 2¹⁴ = 80156509 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 (80172899) 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, 203288 + ... + 203681.

It is an arithmetic number, because the mean of its divisors is an integer number (20145015).

Almost surely, 2^80172893 is an apocalyptic number.

It is an amenable number.

80172893 is a deficient number, since it is larger than the sum of its proper divisors (407167).

80172893 is a wasteful number, since it uses less digits than its factorization.

80172893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407166.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 80172893 is about 8953.9317062394. The cubic root of 80172893 is about 431.1971202262.

The spelling of 80172893 in words is "eighty million, one hundred seventy-two thousand, eight hundred ninety-three".