79738405 has 8 divisors (see below), whose sum is σ = 96564600. Its totient is φ = 63205056.

The previous prime is 79738403. The next prime is 79738423. The reversal of 79738405 is 50483797.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22448644 + 57289761 = 4738^2 + 7569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79738405 - 2¹ = 79738403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79738403) 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, 72610 + ... + 73699.

It is an arithmetic number, because the mean of its divisors is an integer number (12070575).

Almost surely, 2^79738405 is an apocalyptic number.

It is an amenable number.

79738405 is a deficient number, since it is larger than the sum of its proper divisors (16826195).

79738405 is a wasteful number, since it uses less digits than its factorization.

79738405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146423.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 79738405 is about 8929.6363307808. The cubic root of 79738405 is about 430.4167673716.

The spelling of 79738405 in words is "seventy-nine million, seven hundred thirty-eight thousand, four hundred five".