39986474280 has 128 divisors (see below), whose sum is σ = 125270046720. Its totient is φ = 10191709440.

The previous prime is 39986474267. The next prime is 39986474293. The reversal of 39986474280 is 8247468993.

It is an interprime number because it is at equal distance from previous prime (39986474267) and next prime (39986474293).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4220829 + ... + 4230291.

It is an arithmetic number, because the mean of its divisors is an integer number (978672240).

Almost surely, 2^39986474280 is an apocalyptic number.

39986474280 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 39986474280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62635023360).

39986474280 is an abundant number, since it is smaller than the sum of its proper divisors (85283572440).

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

39986474280 is a wasteful number, since it uses less digits than its factorization.

39986474280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11031 (or 11027 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 39986474280 in words is "thirty-nine billion, nine hundred eighty-six million, four hundred seventy-four thousand, two hundred eighty".