39440486400 has 312 divisors, whose sum is σ = 149037407424. Its totient is φ = 9014476800.

The previous prime is 39440486383. The next prime is 39440486419. The reversal of 39440486400 is 468404493.

It is a super-5 number, since 5×39440486400⁵ (a number of 54 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2141230 + ... + 2159570.

Almost surely, 2^39440486400 is an apocalyptic number.

39440486400 is a gapful number since it is divisible by the number (30) 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 39440486400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74518703712).

39440486400 is an abundant number, since it is smaller than the sum of its proper divisors (109596921024).

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

39440486400 is a wasteful number, since it uses less digits than its factorization.

39440486400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18385 (or 18358 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 39440486400 in words is "thirty-nine billion, four hundred forty million, four hundred eighty-six thousand, four hundred".