40193378 has 4 divisors (see below), whose sum is σ = 60290070. Its totient is φ = 20096688.

The previous prime is 40193371. The next prime is 40193401. The reversal of 40193378 is 87339104.

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., 34656769 + 5536609 = 5887^2 + 2353^2 .

It is not an unprimeable number, because it can be changed into a prime (40193371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10048343 + ... + 10048346.

Almost surely, 2^40193378 is an apocalyptic number.

40193378 is a deficient number, since it is larger than the sum of its proper divisors (20096692).

40193378 is a wasteful number, since it uses less digits than its factorization.

40193378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20096691.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 40193378 is about 6339.8247609851. The cubic root of 40193378 is about 342.5454231407.

The spelling of 40193378 in words is "forty million, one hundred ninety-three thousand, three hundred seventy-eight".