40784061 has 4 divisors (see below), whose sum is σ = 54378752. Its totient is φ = 27189372.

The previous prime is 40784057. The next prime is 40784069. The reversal of 40784061 is 16048704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40784061 - 2² = 40784057 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 (40784069) 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, 6797341 + ... + 6797346.

It is an arithmetic number, because the mean of its divisors is an integer number (13594688).

Almost surely, 2^40784061 is an apocalyptic number.

It is an amenable number.

40784061 is a deficient number, since it is larger than the sum of its proper divisors (13594691).

40784061 is a wasteful number, since it uses less digits than its factorization.

40784061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13594690.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 40784061 is about 6386.2399735682. The cubic root of 40784061 is about 344.2152885504.

The spelling of 40784061 in words is "forty million, seven hundred eighty-four thousand, sixty-one".