79729454 has 16 divisors (see below), whose sum is σ = 142622208. Its totient is φ = 32683992.

The previous prime is 79729451. The next prime is 79729459. The reversal of 79729454 is 45492797.

It is a junction number, because it is equal to n+sod(n) for n = 79729399 and 79729408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79729451) 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 7 ways as a sum of consecutive naturals, for example, 123482 + ... + 124125.

It is an arithmetic number, because the mean of its divisors is an integer number (8913888).

Almost surely, 2^79729454 is an apocalyptic number.

79729454 is a deficient number, since it is larger than the sum of its proper divisors (62892754).

79729454 is a wasteful number, since it uses less digits than its factorization.

79729454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247639.

The product of its digits is 635040, while the sum is 47.

The square root of 79729454 is about 8929.1351204918. The cubic root of 79729454 is about 430.4006613532.

The spelling of 79729454 in words is "seventy-nine million, seven hundred twenty-nine thousand, four hundred fifty-four".