40783655 has 12 divisors (see below), whose sum is σ = 53794776. Its totient is φ = 29660400.

The previous prime is 40783649. The next prime is 40783661. The reversal of 40783655 is 55638704.

It is an interprime number because it is at equal distance from previous prime (40783649) and next prime (40783661).

It is not a de Polignac number, because 40783655 - 2⁶ = 40783591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33101 + ... + 34310.

It is an arithmetic number, because the mean of its divisors is an integer number (4482898).

Almost surely, 2^40783655 is an apocalyptic number.

40783655 is a deficient number, since it is larger than the sum of its proper divisors (13011121).

40783655 is a wasteful number, since it uses less digits than its factorization.

40783655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67438 (or 67427 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 40783655 is about 6386.2081863967. The cubic root of 40783655 is about 344.2141463405.

The spelling of 40783655 in words is "forty million, seven hundred eighty-three thousand, six hundred fifty-five".