40266861 has 12 divisors (see below), whose sum is σ = 55480896. Its totient is φ = 25976760.

The previous prime is 40266857. The next prime is 40266881. The reversal of 40266861 is 16866204.

It is a happy number.

It is not a de Polignac number, because 40266861 - 2² = 40266857 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40266881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4101 + ... + 9866.

It is an arithmetic number, because the mean of its divisors is an integer number (4623408).

Almost surely, 2^40266861 is an apocalyptic number.

It is an amenable number.

40266861 is a deficient number, since it is larger than the sum of its proper divisors (15214035).

40266861 is a wasteful number, since it uses less digits than its factorization.

40266861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14032 (or 14001 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 40266861 is about 6345.6174640456. The cubic root of 40266861 is about 342.7540474006.

The spelling of 40266861 in words is "forty million, two hundred sixty-six thousand, eight hundred sixty-one".