40778087 has 8 divisors (see below), whose sum is σ = 49345056. Its totient is φ = 32896512.

The previous prime is 40778083. The next prime is 40778117. The reversal of 40778087 is 78087704.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40778087 - 2² = 40778083 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 (40778083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171218 + ... + 171455.

It is an arithmetic number, because the mean of its divisors is an integer number (6168132).

Almost surely, 2^40778087 is an apocalyptic number.

40778087 is a deficient number, since it is larger than the sum of its proper divisors (8566969).

40778087 is a wasteful number, since it uses less digits than its factorization.

40778087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342697.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 40778087 is about 6385.7722320797. The cubic root of 40778087 is about 344.1984809831.

The spelling of 40778087 in words is "forty million, seven hundred seventy-eight thousand, eighty-seven".