40013697 has 8 divisors (see below), whose sum is σ = 53483680. Its totient is φ = 26609760.

The previous prime is 40013681. The next prime is 40013711. The reversal of 40013697 is 79631004.

It is a happy number.

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

It is not a de Polignac number, because 40013697 - 2⁴ = 40013681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40013627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15079 + ... + 17532.

It is an arithmetic number, because the mean of its divisors is an integer number (6685460).

Almost surely, 2^40013697 is an apocalyptic number.

It is an amenable number.

40013697 is a deficient number, since it is larger than the sum of its proper divisors (13469983).

40013697 is a wasteful number, since it uses less digits than its factorization.

40013697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33023.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 40013697 is about 6325.6380705823. The cubic root of 40013697 is about 342.0342207815.

The spelling of 40013697 in words is "forty million, thirteen thousand, six hundred ninety-seven".