40477858 has 4 divisors (see below), whose sum is σ = 60716790. Its totient is φ = 20238928.

The previous prime is 40477841. The next prime is 40477859. The reversal of 40477858 is 85877404.

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

It can be written as a sum of positive squares in only one way, i.e., 29408929 + 11068929 = 5423^2 + 3327^2 .

It is not an unprimeable number, because it can be changed into a prime (40477859) 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 as a sum of consecutive naturals, namely, 10119463 + ... + 10119466.

Almost surely, 2^40477858 is an apocalyptic number.

40477858 is a deficient number, since it is larger than the sum of its proper divisors (20238932).

40477858 is a wasteful number, since it uses less digits than its factorization.

40477858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20238931.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 40477858 is about 6362.2211530251. The cubic root of 40477858 is about 343.3516779926.

The spelling of 40477858 in words is "forty million, four hundred seventy-seven thousand, eight hundred fifty-eight".