79154893 has 4 divisors (see below), whose sum is σ = 83320960. Its totient is φ = 74988828.

The previous prime is 79154869. The next prime is 79154899. The reversal of 79154893 is 39845197.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39845197 = 7 ⋅5692171.

It is a cyclic number.

It is not a de Polignac number, because 79154893 - 2¹⁷ = 79023821 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 (79154899) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2083005 + ... + 2083042.

It is an arithmetic number, because the mean of its divisors is an integer number (20830240).

Almost surely, 2^79154893 is an apocalyptic number.

It is an amenable number.

79154893 is a deficient number, since it is larger than the sum of its proper divisors (4166067).

79154893 is a wasteful number, since it uses less digits than its factorization.

79154893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166066.

The product of its digits is 272160, while the sum is 46.

The square root of 79154893 is about 8896.9035624761. The cubic root of 79154893 is about 429.3642904879.

The spelling of 79154893 in words is "seventy-nine million, one hundred fifty-four thousand, eight hundred ninety-three".