40401671 has 4 divisors (see below), whose sum is σ = 40423992. Its totient is φ = 40379352.

The previous prime is 40401667. The next prime is 40401677. The reversal of 40401671 is 17610404.

40401671 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 a cyclic number.

It is not a de Polignac number, because 40401671 - 2² = 40401667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401677) 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, 8180 + ... + 12153.

It is an arithmetic number, because the mean of its divisors is an integer number (10105998).

Almost surely, 2^40401671 is an apocalyptic number.

40401671 is a deficient number, since it is larger than the sum of its proper divisors (22321).

40401671 is a wasteful number, since it uses less digits than its factorization.

40401671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22320.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 40401671 is about 6356.2308800106. The cubic root of 40401671 is about 343.1361250558.

The spelling of 40401671 in words is "forty million, four hundred one thousand, six hundred seventy-one".