40095081 has 60 divisors (see below), whose sum is σ = 67757580. Its totient is φ = 23587200.

The previous prime is 40095079. The next prime is 40095091. The reversal of 40095081 is 18059004.

It can be written as a sum of positive squares in 6 ways, for example, as 291600 + 39803481 = 540^2 + 6309^2 .

It is not a de Polignac number, because 40095081 - 2¹ = 40095079 is a prime.

It is a super-2 number, since 2×40095081² = 3215231040793122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40095071) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 396931 + ... + 397031.

It is an arithmetic number, because the mean of its divisors is an integer number (1129293).

Almost surely, 2^40095081 is an apocalyptic number.

It is an amenable number.

40095081 is a deficient number, since it is larger than the sum of its proper divisors (27662499).

40095081 is a wasteful number, since it uses less digits than its factorization.

40095081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 40095081 is about 6332.0676717799. The cubic root of 40095081 is about 342.2659519503.

It can be divided in two parts, 400 and 95081, that added together give a square (95481 = 309²).

The spelling of 40095081 in words is "forty million, ninety-five thousand, eighty-one".