3937443840 has 336 divisors, whose sum is σ = 14905122336. Its totient is φ = 953548800.

The previous prime is 3937443833. The next prime is 3937443869. The reversal of 3937443840 is 483447393.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 4054555 + ... + 4055525.

Almost surely, 2^3937443840 is an apocalyptic number.

3937443840 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 3937443840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7452561168).

3937443840 is an abundant number, since it is smaller than the sum of its proper divisors (10967678496).

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

3937443840 is a wasteful number, since it uses less digits than its factorization.

3937443840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 3937443840 is about 62749.0544948687. The cubic root of 3937443840 is about 1579.0823919339.

The spelling of 3937443840 in words is "three billion, nine hundred thirty-seven million, four hundred forty-three thousand, eight hundred forty".