43449644430 has 96 divisors (see below), whose sum is σ = 116719293600. Its totient is φ = 11501834112.

The previous prime is 43449644411. The next prime is 43449644449. The reversal of 43449644430 is 3444694434.

It is an interprime number because it is at equal distance from previous prime (43449644411) and next prime (43449644449).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5212506 + ... + 5220834.

It is an arithmetic number, because the mean of its divisors is an integer number (1215825975).

Almost surely, 2^43449644430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43449644430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58359646800).

43449644430 is an abundant number, since it is smaller than the sum of its proper divisors (73269649170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43449644430 is a wasteful number, since it uses less digits than its factorization.

43449644430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8623 (or 8478 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 45.

The spelling of 43449644430 in words is "forty-three billion, four hundred forty-nine million, six hundred forty-four thousand, four hundred thirty".