43401000 has 256 divisors, whose sum is σ = 153653760. Its totient is φ = 10137600.

The previous prime is 43400999. The next prime is 43401031. The reversal of 43401000 is 10434.

43401000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1172982 + ... + 1173018.

It is an arithmetic number, because the mean of its divisors is an integer number (600210).

Almost surely, 2^43401000 is an apocalyptic number.

43401000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43401000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76826880).

43401000 is an abundant number, since it is smaller than the sum of its proper divisors (110252760).

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

43401000 is a wasteful number, since it uses less digits than its factorization.

43401000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 43401000 is about 6587.9435334556. The cubic root of 43401000 is about 351.4254789488.

Adding to 43401000 its reverse (10434), we get a palindrome (43411434).

The spelling of 43401000 in words is "forty-three million, four hundred one thousand".