40639050 has 48 divisors (see below), whose sum is σ = 111986880. Its totient is φ = 10836720.

The previous prime is 40639031. The next prime is 40639057. The reversal of 40639050 is 5093604.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40639057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13702 + ... + 16401.

It is an arithmetic number, because the mean of its divisors is an integer number (2333060).

Almost surely, 2^40639050 is an apocalyptic number.

40639050 is an abundant number, since it is smaller than the sum of its proper divisors (71347830).

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

40639050 is a wasteful number, since it uses less digits than its factorization.

40639050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30124 (or 30113 counting only the distinct ones).

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

The square root of 40639050 is about 6374.8764693914. The cubic root of 40639050 is about 343.8068423907.

The spelling of 40639050 in words is "forty million, six hundred thirty-nine thousand, fifty".