4021969400 has 96 divisors (see below), whose sum is σ = 10182942000. Its totient is φ = 1471518720.

The previous prime is 4021969349. The next prime is 4021969403. The reversal of 4021969400 is 49691204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021969403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91952 + ... + 128448.

Almost surely, 2^4021969400 is an apocalyptic number.

4021969400 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 4021969400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5091471000).

4021969400 is an abundant number, since it is smaller than the sum of its proper divisors (6160972600).

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

4021969400 is a wasteful number, since it uses less digits than its factorization.

4021969400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36561 (or 36552 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 4021969400 is about 63418.9987306643. The cubic root of 4021969400 is about 1590.3019349336.

The spelling of 4021969400 in words is "four billion, twenty-one million, nine hundred sixty-nine thousand, four hundred".