40393306 has 4 divisors (see below), whose sum is σ = 60589962. Its totient is φ = 20196652.

The previous prime is 40393291. The next prime is 40393321. The reversal of 40393306 is 60339304.

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

It is an interprime number because it is at equal distance from previous prime (40393291) and next prime (40393321).

It can be written as a sum of positive squares in only one way, i.e., 21077281 + 19316025 = 4591^2 + 4395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10098325 + ... + 10098328.

Almost surely, 2^40393306 is an apocalyptic number.

40393306 is a deficient number, since it is larger than the sum of its proper divisors (20196656).

40393306 is a wasteful number, since it uses less digits than its factorization.

40393306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20196655.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 40393306 is about 6355.5728302019. The cubic root of 40393306 is about 343.1124417796.

The spelling of 40393306 in words is "forty million, three hundred ninety-three thousand, three hundred six".