40513385 has 8 divisors (see below), whose sum is σ = 53035776. Its totient is φ = 29464240.

The previous prime is 40513349. The next prime is 40513387. The reversal of 40513385 is 58331504.

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

It is not a de Polignac number, because 40513385 - 2¹⁴ = 40497001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40513387) 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, 368249 + ... + 368358.

It is an arithmetic number, because the mean of its divisors is an integer number (6629472).

Almost surely, 2^40513385 is an apocalyptic number.

It is an amenable number.

40513385 is a deficient number, since it is larger than the sum of its proper divisors (12522391).

40513385 is a wasteful number, since it uses less digits than its factorization.

40513385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736623.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 40513385 is about 6365.0125687229. The cubic root of 40513385 is about 343.4521006981.

Adding to 40513385 its reverse (58331504), we get a palindrome (98844889).

The spelling of 40513385 in words is "forty million, five hundred thirteen thousand, three hundred eighty-five".