79154906 has 4 divisors (see below), whose sum is σ = 118732362. Its totient is φ = 39577452.

The previous prime is 79154903. The next prime is 79154923. The reversal of 79154906 is 60945197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60945197 = 97 ⋅628301.

It can be written as a sum of positive squares in only one way, i.e., 74114881 + 5040025 = 8609^2 + 2245^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79154903) 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 as a sum of consecutive naturals, namely, 19788725 + ... + 19788728.

Almost surely, 2^79154906 is an apocalyptic number.

79154906 is a deficient number, since it is larger than the sum of its proper divisors (39577456).

79154906 is a wasteful number, since it uses less digits than its factorization.

79154906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39577455.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 79154906 is about 8896.9042930673. The cubic root of 79154906 is about 429.3643139934.

It can be divided in two parts, 7915 and 4906, that added together give a palindrome (12821).

The spelling of 79154906 in words is "seventy-nine million, one hundred fifty-four thousand, nine hundred six".