40780017 has 24 divisors (see below), whose sum is σ = 61405344. Its totient is φ = 27044928.

The previous prime is 40780009. The next prime is 40780049. The reversal of 40780017 is 71008704.

It is not a de Polignac number, because 40780017 - 2³ = 40780009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40780007) 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, 68473 + ... + 69065.

It is an arithmetic number, because the mean of its divisors is an integer number (2558556).

Almost surely, 2^40780017 is an apocalyptic number.

It is an amenable number.

40780017 is a deficient number, since it is larger than the sum of its proper divisors (20625327).

40780017 is an equidigital number, since it uses as much as digits as its factorization.

40780017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 40780017 is about 6385.9233474886. The cubic root of 40780017 is about 344.2039111266.

The spelling of 40780017 in words is "forty million, seven hundred eighty thousand, seventeen".