40348081 has 4 divisors (see below), whose sum is σ = 41649664. Its totient is φ = 39046500.

The previous prime is 40348079. The next prime is 40348109. The reversal of 40348081 is 18084304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40348081 - 2¹ = 40348079 is a prime.

It is a super-2 number, since 2×40348081² = 3255935280765122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40348681) 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, 650745 + ... + 650806.

It is an arithmetic number, because the mean of its divisors is an integer number (10412416).

Almost surely, 2^40348081 is an apocalyptic number.

It is an amenable number.

40348081 is a deficient number, since it is larger than the sum of its proper divisors (1301583).

40348081 is a wasteful number, since it uses less digits than its factorization.

40348081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301582.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 40348081 is about 6352.0139326044. The cubic root of 40348081 is about 342.9843425436.

It can be divided in two parts, 403 and 48081, that added together give a palindrome (48484).

The spelling of 40348081 in words is "forty million, three hundred forty-eight thousand, eighty-one".