40257677 has 4 divisors (see below), whose sum is σ = 40466460. Its totient is φ = 40048896.

The previous prime is 40257667. The next prime is 40257703. The reversal of 40257677 is 77675204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 20016676 = 4499^2 + 4474^2 .

It is a cyclic number.

It is not a de Polignac number, because 40257677 - 2⁸ = 40257421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40257677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40257667) 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 3 ways as a sum of consecutive naturals, for example, 104102 + ... + 104487.

It is an arithmetic number, because the mean of its divisors is an integer number (10116615).

Almost surely, 2^40257677 is an apocalyptic number.

It is an amenable number.

40257677 is a deficient number, since it is larger than the sum of its proper divisors (208783).

40257677 is a wasteful number, since it uses less digits than its factorization.

40257677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208782.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 40257677 is about 6344.8937737365. The cubic root of 40257677 is about 342.7279871578.

The spelling of 40257677 in words is "forty million, two hundred fifty-seven thousand, six hundred seventy-seven".