40776440 has 16 divisors (see below), whose sum is σ = 91747080. Its totient is φ = 16310560.

The previous prime is 40776433. The next prime is 40776443. The reversal of 40776440 is 4467704.

It is a junction number, because it is equal to n+sod(n) for n = 40776397 and 40776406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40776443) 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, 509666 + ... + 509745.

Almost surely, 2^40776440 is an apocalyptic number.

40776440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40776440 is an abundant number, since it is smaller than the sum of its proper divisors (50970640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40776440 is a wasteful number, since it uses less digits than its factorization.

40776440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019422 (or 1019418 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 40776440 is about 6385.6432722162. The cubic root of 40776440 is about 344.1938469376.

The spelling of 40776440 in words is "forty million, seven hundred seventy-six thousand, four hundred forty".