3989700 has 216 divisors, whose sum is σ = 15165696. Its totient is φ = 864000.
The previous prime is 3989683. The next prime is 3989701. The reversal of 3989700 is 79893.
3989700 = T231 + T232 + ... + T330.
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 (3989701) by changing a digit.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 128685 + ... + 128715.
Almost surely, 23989700 is an apocalyptic number.
3989700 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 3989700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7582848).
3989700 is an abundant number, since it is smaller than the sum of its proper divisors (11175996).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3989700 is a wasteful number, since it uses less digits than its factorization.
3989700 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 75 (or 65 counting only the distinct ones).
The product of its (nonzero) digits is 13608, while the sum is 36.
The square root of 3989700 is about 1997.4233402061. The cubic root of 3989700 is about 158.6037361560.
The spelling of 3989700 in words is "three million, nine hundred eighty-nine thousand, seven hundred".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.061 sec. • engine limits •