40796138 has 4 divisors (see below), whose sum is σ = 61194210. Its totient is φ = 20398068.

The previous prime is 40796131. The next prime is 40796149. The reversal of 40796138 is 83169704.

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

It can be written as a sum of positive squares in only one way, i.e., 39150049 + 1646089 = 6257^2 + 1283^2 .

It is not an unprimeable number, because it can be changed into a prime (40796131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10199033 + ... + 10199036.

Almost surely, 2^40796138 is an apocalyptic number.

40796138 is a deficient number, since it is larger than the sum of its proper divisors (20398072).

40796138 is a wasteful number, since it uses less digits than its factorization.

40796138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20398071.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 40796138 is about 6387.1854521377. The cubic root of 40796138 is about 344.2492616081.

The spelling of 40796138 in words is "forty million, seven hundred ninety-six thousand, one hundred thirty-eight".