40240797 has 4 divisors (see below), whose sum is σ = 53654400. Its totient is φ = 26827196.

The previous prime is 40240787. The next prime is 40240799. The reversal of 40240797 is 79704204.

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 40240797 - 2¹¹ = 40238749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240799) 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, 6706797 + ... + 6706802.

It is an arithmetic number, because the mean of its divisors is an integer number (13413600).

Almost surely, 2^40240797 is an apocalyptic number.

It is an amenable number.

40240797 is a deficient number, since it is larger than the sum of its proper divisors (13413603).

40240797 is a wasteful number, since it uses less digits than its factorization.

40240797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13413602.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 40240797 is about 6343.5634307540. The cubic root of 40240797 is about 342.6800786377.

The spelling of 40240797 in words is "forty million, two hundred forty thousand, seven hundred ninety-seven".