40402950 has 144 divisors (see below), whose sum is σ = 122135040. Its totient is φ = 8796480.

The previous prime is 40402933. The next prime is 40402961. The reversal of 40402950 is 5920404.

It is a self number, because there is not a number n which added to its sum of digits gives 40402950.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 168931 + ... + 169169.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 2^40402950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40402950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61067520).

40402950 is an abundant number, since it is smaller than the sum of its proper divisors (81732090).

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

40402950 is a wasteful number, since it uses less digits than its factorization.

40402950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40402950 is about 6356.3314891532. The cubic root of 40402950 is about 343.1397459166.

The spelling of 40402950 in words is "forty million, four hundred two thousand, nine hundred fifty".