40727897 has 16 divisors (see below), whose sum is σ = 48168960. Its totient is φ = 33712848.

The previous prime is 40727891. The next prime is 40727909. The reversal of 40727897 is 79872704.

It is a cyclic number.

It is not a de Polignac number, because 40727897 - 2¹⁶ = 40662361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40727891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25208 + ... + 26774.

It is an arithmetic number, because the mean of its divisors is an integer number (3010560).

Almost surely, 2^40727897 is an apocalyptic number.

40727897 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40727897 is a deficient number, since it is larger than the sum of its proper divisors (7441063).

40727897 is a wasteful number, since it uses less digits than its factorization.

40727897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 40727897 is about 6381.8411920072. The cubic root of 40727897 is about 344.0572089142.

The spelling of 40727897 in words is "forty million, seven hundred twenty-seven thousand, eight hundred ninety-seven".