40878011 has 4 divisors (see below), whose sum is σ = 41092224. Its totient is φ = 40663800.

The previous prime is 40877957. The next prime is 40878017. The reversal of 40878011 is 11087804.

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

It is a cyclic number.

It is not a de Polignac number, because 40878011 - 2¹⁰ = 40876987 is a prime.

It is a super-2 number, since 2×40878011² = 3342023566632242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40878017) 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, 106820 + ... + 107201.

It is an arithmetic number, because the mean of its divisors is an integer number (10273056).

Almost surely, 2^40878011 is an apocalyptic number.

40878011 is a deficient number, since it is larger than the sum of its proper divisors (214213).

40878011 is a wasteful number, since it uses less digits than its factorization.

40878011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214212.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 40878011 is about 6393.5914007700. The cubic root of 40878011 is about 344.4793968424.

The spelling of 40878011 in words is "forty million, eight hundred seventy-eight thousand, eleven".