3998770464 has 144 divisors (see below), whose sum is σ = 12009368448. Its totient is φ = 1157910528.

The previous prime is 3998770463. The next prime is 3998770469. The reversal of 3998770464 is 4640778993.

It is not an unprimeable number, because it can be changed into a prime (3998770463) 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, 355129 + ... + 366215.

It is an arithmetic number, because the mean of its divisors is an integer number (83398392).

Almost surely, 2^3998770464 is an apocalyptic number.

3998770464 is a gapful number since it is divisible by the number (34) 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 3998770464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6004684224).

3998770464 is an abundant number, since it is smaller than the sum of its proper divisors (8010597984).

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

3998770464 is a wasteful number, since it uses less digits than its factorization.

3998770464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11147 (or 11122 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The square root of 3998770464 is about 63235.8321207209. The cubic root of 3998770464 is about 1587.2383880720.

The spelling of 3998770464 in words is "three billion, nine hundred ninety-eight million, seven hundred seventy thousand, four hundred sixty-four".