43454638 has 8 divisors (see below), whose sum is σ = 65210832. Its totient is φ = 21717696.

The previous prime is 43454633. The next prime is 43454641. The reversal of 43454638 is 83645434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×43454638² = 3776611127422088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43454597 and 43454606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43454633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4231 + ... + 10237.

It is an arithmetic number, because the mean of its divisors is an integer number (8151354).

Almost surely, 2^43454638 is an apocalyptic number.

43454638 is a deficient number, since it is larger than the sum of its proper divisors (21756194).

43454638 is a wasteful number, since it uses less digits than its factorization.

43454638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626.

The product of its digits is 138240, while the sum is 37.

The square root of 43454638 is about 6592.0131978023. The cubic root of 43454638 is about 351.5701914353.

The spelling of 43454638 in words is "forty-three million, four hundred fifty-four thousand, six hundred thirty-eight".