4394781400 has 24 divisors (see below), whose sum is σ = 10217867220. Its totient is φ = 1757912480.

The previous prime is 4394781383. The next prime is 4394781407. The reversal of 4394781400 is 41874934.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394781407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10986754 + ... + 10987153.

Almost surely, 2^4394781400 is an apocalyptic number.

4394781400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4394781400 is an abundant number, since it is smaller than the sum of its proper divisors (5823085820).

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

4394781400 is a wasteful number, since it uses less digits than its factorization.

4394781400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21973923 (or 21973914 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 4394781400 is about 66293.1474588437. The cubic root of 4394781400 is about 1637.9944500660.

The spelling of 4394781400 in words is "four billion, three hundred ninety-four million, seven hundred eighty-one thousand, four hundred".