4009950 has 144 divisors (see below), whose sum is σ = 13153920. Its totient is φ = 855360.

The previous prime is 4009939. The next prime is 4009991. The reversal of 4009950 is 599004.

It is a happy number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 59817 + ... + 59883.

Almost surely, 2^4009950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4009950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6576960).

4009950 is an abundant number, since it is smaller than the sum of its proper divisors (9143970).

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

4009950 is a wasteful number, since it uses less digits than its factorization.

4009950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 4009950 is about 2002.4859550069. The cubic root of 4009950 is about 158.8716182147.

The spelling of 4009950 in words is "four million, nine thousand, nine hundred fifty".