40690371 has 4 divisors (see below), whose sum is σ = 54253832. Its totient is φ = 27126912.

The previous prime is 40690369. The next prime is 40690387. The reversal of 40690371 is 17309604.

It is a happy number.

40690371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40690371 - 2¹ = 40690369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40690301) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6781726 + ... + 6781731.

It is an arithmetic number, because the mean of its divisors is an integer number (13563458).

Almost surely, 2^40690371 is an apocalyptic number.

40690371 is a deficient number, since it is larger than the sum of its proper divisors (13563461).

40690371 is a wasteful number, since it uses less digits than its factorization.

40690371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13563460.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 40690371 is about 6378.9004538400. The cubic root of 40690371 is about 343.9515069330.

Adding to 40690371 its reverse (17309604), we get a palindrome (57999975).

The spelling of 40690371 in words is "forty million, six hundred ninety thousand, three hundred seventy-one".