43404174721 has 8 divisors (see below), whose sum is σ = 43704792584. Its totient is φ = 43104337920.

The previous prime is 43404174607. The next prime is 43404174727. The reversal of 43404174721 is 12747140434.

It can be written as a sum of positive squares in 4 ways, for example, as 14737960000 + 28666214721 = 121400^2 + 169311^2 .

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 43404174721 - 2¹³ = 43404166529 is a prime.

It is a super-2 number, since 2×43404174721² (a number of 22 digits) contains 22 as substring.

It is a deceptive number, since it divides R_43404174720.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43404174727) 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, 83520 + ... + 306241.

It is an arithmetic number, because the mean of its divisors is an integer number (5463099073).

Almost surely, 2^43404174721 is an apocalyptic number.

43404174721 is the 111361-st nonagonal number.

It is an amenable number.

43404174721 is a deficient number, since it is larger than the sum of its proper divisors (300617863).

43404174721 is a wasteful number, since it uses less digits than its factorization.

43404174721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390531.

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 43404174721 in words is "forty-three billion, four hundred four million, one hundred seventy-four thousand, seven hundred twenty-one".