40001776 has 20 divisors (see below), whose sum is σ = 77620032. Its totient is φ = 19970816.

The previous prime is 40001771. The next prime is 40001777. The reversal of 40001776 is 67710004.

It is a self number, because there is not a number n which added to its sum of digits gives 40001776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40001771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12360 + ... + 15256.

Almost surely, 2^40001776 is an apocalyptic number.

It is an amenable number.

40001776 is a deficient number, since it is larger than the sum of its proper divisors (37618256).

40001776 is a wasteful number, since it uses less digits than its factorization.

40001776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 40001776 is about 6324.6957239064. The cubic root of 40001776 is about 342.0002507892. Note that the first 3 decimals are identical.

It can be divided in two parts, 4000 and 1776, that added together give a square (5776 = 76²).

The spelling of 40001776 in words is "forty million, one thousand, seven hundred seventy-six".