40977591 has 4 divisors (see below), whose sum is σ = 54636792. Its totient is φ = 27318392.

The previous prime is 40977589. The next prime is 40977613. The reversal of 40977591 is 19577904.

It is a happy number.

40977591 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 40977591 - 2¹ = 40977589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40977511) 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, 6829596 + ... + 6829601.

It is an arithmetic number, because the mean of its divisors is an integer number (13659198).

Almost surely, 2^40977591 is an apocalyptic number.

40977591 is a deficient number, since it is larger than the sum of its proper divisors (13659201).

40977591 is a wasteful number, since it uses less digits than its factorization.

40977591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13659200.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 40977591 is about 6401.3741493526. The cubic root of 40977591 is about 344.7588905568.

The spelling of 40977591 in words is "forty million, nine hundred seventy-seven thousand, five hundred ninety-one".