79537447 has 4 divisors (see below), whose sum is σ = 86768136. Its totient is φ = 72306760.

The previous prime is 79537429. The next prime is 79537481. The reversal of 79537447 is 74473597.

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 79537447 - 2¹⁹ = 79013159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79537397 and 79537406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79537247) 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, 3615328 + ... + 3615349.

It is an arithmetic number, because the mean of its divisors is an integer number (21692034).

Almost surely, 2^79537447 is an apocalyptic number.

79537447 is a deficient number, since it is larger than the sum of its proper divisors (7230689).

79537447 is a wasteful number, since it uses less digits than its factorization.

79537447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7230688.

The product of its digits is 740880, while the sum is 46.

The square root of 79537447 is about 8918.3769263247. The cubic root of 79537447 is about 430.0548821242.

It can be divided in two parts, 7953 and 7447, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 79537447 in words is "seventy-nine million, five hundred thirty-seven thousand, four hundred forty-seven".