40780995 has 16 divisors (see below), whose sum is σ = 65331360. Its totient is φ = 21722624.

The previous prime is 40780969. The next prime is 40781003. The reversal of 40780995 is 59908704.

It is a Cunningham number, because it is equal to 6386²-1.

It is a cyclic number.

It is not a de Polignac number, because 40780995 - 2⁷ = 40780867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18091 + ... + 20219.

It is an arithmetic number, because the mean of its divisors is an integer number (4083210).

Almost surely, 2^40780995 is an apocalyptic number.

40780995 is a deficient number, since it is larger than the sum of its proper divisors (24550365).

40780995 is a wasteful number, since it uses less digits than its factorization.

40780995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 40780995 is about 6385.9999217037. Note that the first 4 decimals coincide. The cubic root of 40780995 is about 344.2066627090.

The spelling of 40780995 in words is "forty million, seven hundred eighty thousand, nine hundred ninety-five".