40361393 has 4 divisors (see below), whose sum is σ = 40507380. Its totient is φ = 40215408.

The previous prime is 40361381. The next prime is 40361407. The reversal of 40361393 is 39316304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7091569 + 33269824 = 2663^2 + 5768^2 .

It is a cyclic number.

It is not a de Polignac number, because 40361393 - 2⁶ = 40361329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40361333) 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, 72578 + ... + 73131.

It is an arithmetic number, because the mean of its divisors is an integer number (10126845).

Almost surely, 2^40361393 is an apocalyptic number.

It is an amenable number.

40361393 is a deficient number, since it is larger than the sum of its proper divisors (145987).

40361393 is a wasteful number, since it uses less digits than its factorization.

40361393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145986.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 40361393 is about 6353.0617028327. The cubic root of 40361393 is about 343.0220585507.

Adding to 40361393 its reverse (39316304), we get a palindrome (79677697).

The spelling of 40361393 in words is "forty million, three hundred sixty-one thousand, three hundred ninety-three".