40109783 has 24 divisors (see below), whose sum is σ = 49863600. Its totient is φ = 32057088.

The previous prime is 40109761. The next prime is 40109789. The reversal of 40109783 is 38790104.

It is not a de Polignac number, because 40109783 - 2⁸ = 40109527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40109789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148973 + ... + 149241.

It is an arithmetic number, because the mean of its divisors is an integer number (2077650).

Almost surely, 2^40109783 is an apocalyptic number.

40109783 is a deficient number, since it is larger than the sum of its proper divisors (9753817).

40109783 is a wasteful number, since it uses less digits than its factorization.

40109783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 40109783 is about 6333.2284815882. The cubic root of 40109783 is about 342.3077806816.

Adding to 40109783 its reverse (38790104), we get a palindrome (78899887).

The spelling of 40109783 in words is "forty million, one hundred nine thousand, seven hundred eighty-three".