44997989400 has 384 divisors, whose sum is σ = 190762790400. Its totient is φ = 9493977600.

The previous prime is 44997989357. The next prime is 44997989423. The reversal of 44997989400 is 498979944.

44997989400 is a `hidden beast` number, since 449 + 9 + 79 + 89 + 40 + 0 = 666.

It is a super-3 number, since 3×44997989400³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 445615 + ... + 537185.

It is an arithmetic number, because the mean of its divisors is an integer number (496778100).

Almost surely, 2^44997989400 is an apocalyptic number.

44997989400 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 44997989400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95381395200).

44997989400 is an abundant number, since it is smaller than the sum of its proper divisors (145764801000).

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

44997989400 is a wasteful number, since it uses less digits than its factorization.

44997989400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91616 (or 91601 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 44997989400 in words is "forty-four billion, nine hundred ninety-seven million, nine hundred eighty-nine thousand, four hundred".