40471938 has 48 divisors (see below), whose sum is σ = 99415680. Its totient is φ = 11796192.

The previous prime is 40471933. The next prime is 40471943. The reversal of 40471938 is 83917404.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40471933) and next prime (40471943).

It is not an unprimeable number, because it can be changed into a prime (40471933) 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, 106 + ... + 8997.

It is an arithmetic number, because the mean of its divisors is an integer number (2071160).

Almost surely, 2^40471938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40471938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49707840).

40471938 is an abundant number, since it is smaller than the sum of its proper divisors (58943742).

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

40471938 is a wasteful number, since it uses less digits than its factorization.

40471938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9143 (or 9140 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40471938 is about 6361.7558896896. The cubic root of 40471938 is about 343.3349384619.

The spelling of 40471938 in words is "forty million, four hundred seventy-one thousand, nine hundred thirty-eight".