43973302421 has 8 divisors (see below), whose sum is σ = 45166902144. Its totient is φ = 42779972880.

The previous prime is 43973302393. The next prime is 43973302427. The reversal of 43973302421 is 12420337934.

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 43973302421 - 2⁶ = 43973302357 is a prime.

It is a super-2 number, since 2×43973302421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43973302427) 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, 287336 + ... + 412926.

It is an arithmetic number, because the mean of its divisors is an integer number (5645862768).

Almost surely, 2^43973302421 is an apocalyptic number.

It is an amenable number.

43973302421 is a deficient number, since it is larger than the sum of its proper divisors (1193599723).

43973302421 is a wasteful number, since it uses less digits than its factorization.

43973302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135091.

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 43973302421 in words is "forty-three billion, nine hundred seventy-three million, three hundred two thousand, four hundred twenty-one".