40494856 has 8 divisors (see below), whose sum is σ = 75927870. Its totient is φ = 20247424.

The previous prime is 40494821. The next prime is 40494859. The reversal of 40494856 is 65849404.

It can be written as a sum of positive squares in only one way, i.e., 39262756 + 1232100 = 6266^2 + 1110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40494859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530921 + ... + 2530936.

Almost surely, 2^40494856 is an apocalyptic number.

It is an amenable number.

40494856 is a deficient number, since it is larger than the sum of its proper divisors (35433014).

40494856 is a wasteful number, since it uses less digits than its factorization.

40494856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061863 (or 5061859 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 40494856 is about 6363.5568670359. The cubic root of 40494856 is about 343.3997328663.

The spelling of 40494856 in words is "forty million, four hundred ninety-four thousand, eight hundred fifty-six".