394976500 has 48 divisors (see below), whose sum is σ = 882737856. Its totient is φ = 154308000.

The previous prime is 394976497. The next prime is 394976509. The reversal of 394976500 is 5679493.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394976509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12315 + ... + 30685.

It is an arithmetic number, because the mean of its divisors is an integer number (18390372).

Almost surely, 2^394976500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394976500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441368928).

394976500 is an abundant number, since it is smaller than the sum of its proper divisors (487761356).

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

394976500 is a wasteful number, since it uses less digits than its factorization.

394976500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18433 (or 18421 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 394976500 is about 19874.0156988969. The cubic root of 394976500 is about 733.7088412030.

The spelling of 394976500 in words is "three hundred ninety-four million, nine hundred seventy-six thousand, five hundred".