472047221493 has 6 divisors (see below), whose sum is σ = 681845986614. Its totient is φ = 314698147656.

The previous prime is 472047221473. The next prime is 472047221521. The reversal of 472047221493 is 394122740274.

472047221493 is a `hidden beast` number, since 4 + 72 + 0 + 4 + 72 + 21 + 493 = 666.

It can be written as a sum of positive squares in only one way, i.e., 468291125124 + 3756096369 = 684318^2 + 61287^2 .

It is not a de Polignac number, because 472047221493 - 2¹³ = 472047213301 is a prime.

It is a super-2 number, since 2×472047221493² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472047221473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26224845630 + ... + 26224845647.

It is an arithmetic number, because the mean of its divisors is an integer number (113640997769).

Almost surely, 2^472047221493 is an apocalyptic number.

It is an amenable number.

472047221493 is a deficient number, since it is larger than the sum of its proper divisors (209798765121).

472047221493 is a wasteful number, since it uses less digits than its factorization.

472047221493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52449691283 (or 52449691280 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 472047221493 in words is "four hundred seventy-two billion, forty-seven million, two hundred twenty-one thousand, four hundred ninety-three".