3950640 has 160 divisors (see below), whose sum is σ = 14284800. Its totient is φ = 1002240.

The previous prime is 3950629. The next prime is 3950657. The reversal of 3950640 is 460593.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 66931 + ... + 66989.

It is an arithmetic number, because the mean of its divisors is an integer number (89280).

Almost surely, 2^3950640 is an apocalyptic number.

3950640 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 3950640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7142400).

3950640 is an abundant number, since it is smaller than the sum of its proper divisors (10334160).

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

3950640 is a wasteful number, since it uses less digits than its factorization.

3950640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3950640 is about 1987.6216943875. The cubic root of 3950640 is about 158.0844498603.

The spelling of 3950640 in words is "three million, nine hundred fifty thousand, six hundred forty".