43445438446 has 16 divisors (see below), whose sum is σ = 66220623504. Its totient is φ = 21374486784.

The previous prime is 43445438401. The next prime is 43445438473. The reversal of 43445438446 is 64483454434.

It is a happy number.

It is a super-2 number, since 2×43445438446² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43445438446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613680 + ... + 680803.

It is an arithmetic number, because the mean of its divisors is an integer number (4138788969).

Almost surely, 2^43445438446 is an apocalyptic number.

43445438446 is a deficient number, since it is larger than the sum of its proper divisors (22775185058).

43445438446 is a wasteful number, since it uses less digits than its factorization.

43445438446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294755.

The product of its digits is 8847360, while the sum is 49.

The spelling of 43445438446 in words is "forty-three billion, four hundred forty-five million, four hundred thirty-eight thousand, four hundred forty-six".