40390550 has 24 divisors (see below), whose sum is σ = 75470616. Its totient is φ = 16082240.

The previous prime is 40390549. The next prime is 40390583. The reversal of 40390550 is 5509304.

40390550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9917 + ... + 13383.

It is an arithmetic number, because the mean of its divisors is an integer number (3144609).

Almost surely, 2^40390550 is an apocalyptic number.

40390550 is a deficient number, since it is larger than the sum of its proper divisors (35080066).

40390550 is a wasteful number, since it uses less digits than its factorization.

40390550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712 (or 3707 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 40390550 is about 6355.3560089109. The cubic root of 40390550 is about 343.1046381813.

Adding to 40390550 its reverse (5509304), we get a palindrome (45899854).

The spelling of 40390550 in words is "forty million, three hundred ninety thousand, five hundred fifty".