79723400446 has 16 divisors (see below), whose sum is σ = 129087367200. Its totient is φ = 36813803488.

The previous prime is 79723400443. The next prime is 79723400479. The reversal of 79723400446 is 64400432797.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 79723400396 and 79723400405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79723400443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29880001 + ... + 29882668.

It is an arithmetic number, because the mean of its divisors is an integer number (8067960450).

Almost surely, 2^79723400446 is an apocalyptic number.

79723400446 is a deficient number, since it is larger than the sum of its proper divisors (49363966754).

79723400446 is a wasteful number, since it uses less digits than its factorization.

79723400446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59762723.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 79723400446 in words is "seventy-nine billion, seven hundred twenty-three million, four hundred thousand, four hundred forty-six".