40884381 has 12 divisors (see below), whose sum is σ = 60960640. Its totient is φ = 26376840.

The previous prime is 40884377. The next prime is 40884391. The reversal of 40884381 is 18348804.

It is not a de Polignac number, because 40884381 - 2² = 40884377 is a prime.

It is a super-2 number, since 2×40884381² = 3343065219506322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40884301) 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, 72991 + ... + 73548.

Almost surely, 2^40884381 is an apocalyptic number.

It is an amenable number.

40884381 is a deficient number, since it is larger than the sum of its proper divisors (20076259).

40884381 is a wasteful number, since it uses less digits than its factorization.

40884381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146576 (or 146573 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 40884381 is about 6394.0895364391. The cubic root of 40884381 is about 344.4972892637.

The spelling of 40884381 in words is "forty million, eight hundred eighty-four thousand, three hundred eighty-one".