40426385 has 8 divisors (see below), whose sum is σ = 49823016. Its totient is φ = 31466880.

The previous prime is 40426349. The next prime is 40426403. The reversal of 40426385 is 58362404.

40426385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1201216 + 39225169 = 1096^2 + 6263^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-40426385 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109076 + ... + 109445.

It is an arithmetic number, because the mean of its divisors is an integer number (6227877).

Almost surely, 2^40426385 is an apocalyptic number.

It is an amenable number.

40426385 is a deficient number, since it is larger than the sum of its proper divisors (9396631).

40426385 is a wasteful number, since it uses less digits than its factorization.

40426385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218563.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 40426385 is about 6358.1746594443. The cubic root of 40426385 is about 343.2060770935.

Adding to 40426385 its reverse (58362404), we get a palindrome (98788789).

The spelling of 40426385 in words is "forty million, four hundred twenty-six thousand, three hundred eighty-five".