39478500 has 144 divisors (see below), whose sum is σ = 129013248. Its totient is φ = 10152000.

The previous prime is 39478459. The next prime is 39478507. The reversal of 39478500 is 587493.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (39478507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139359 + ... + 139641.

Almost surely, 2^39478500 is an apocalyptic number.

39478500 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 39478500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64506624).

39478500 is an abundant number, since it is smaller than the sum of its proper divisors (89534748).

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

39478500 is a wasteful number, since it uses less digits than its factorization.

39478500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 39478500 is about 6283.1918640131. The cubic root of 39478500 is about 340.5024290356.

The spelling of 39478500 in words is "thirty-nine million, four hundred seventy-eight thousand, five hundred".