40127797 has 4 divisors (see below), whose sum is σ = 40393696. Its totient is φ = 39861900.

The previous prime is 40127779. The next prime is 40127827. The reversal of 40127797 is 79772104.

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 a cyclic number.

It is not a de Polignac number, because 40127797 - 2²³ = 31739189 is a prime.

It is a super-2 number, since 2×40127797² = 3220480184146418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40127777) 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, 132723 + ... + 133024.

It is an arithmetic number, because the mean of its divisors is an integer number (10098424).

Almost surely, 2^40127797 is an apocalyptic number.

It is an amenable number.

40127797 is a deficient number, since it is larger than the sum of its proper divisors (265899).

40127797 is a wasteful number, since it uses less digits than its factorization.

40127797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265898.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 40127797 is about 6334.6505033822. The cubic root of 40127797 is about 342.3590184678.

The spelling of 40127797 in words is "forty million, one hundred twenty-seven thousand, seven hundred ninety-seven".