447025779418 has 4 divisors (see below), whose sum is σ = 670538669130. Its totient is φ = 223512889708.

The previous prime is 447025779413. The next prime is 447025779443. The reversal of 447025779418 is 814977520744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 334688861529 + 112336917889 = 578523^2 + 335167^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (447025779413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111756444853 + ... + 111756444856.

Almost surely, 2^447025779418 is an apocalyptic number.

447025779418 is a deficient number, since it is larger than the sum of its proper divisors (223512889712).

447025779418 is a wasteful number, since it uses less digits than its factorization.

447025779418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223512889711.

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 447025779418 in words is "four hundred forty-seven billion, twenty-five million, seven hundred seventy-nine thousand, four hundred eighteen".