40459481 has 4 divisors (see below), whose sum is σ = 40768464. Its totient is φ = 40150500.

The previous prime is 40459477. The next prime is 40459499. The reversal of 40459481 is 18495404.

It is a happy number.

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 40459481 - 2² = 40459477 is a prime.

It is a super-2 number, since 2×40459481² = 3273939205578722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40459381) 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, 154295 + ... + 154556.

It is an arithmetic number, because the mean of its divisors is an integer number (10192116).

Almost surely, 2^40459481 is an apocalyptic number.

It is an amenable number.

40459481 is a deficient number, since it is larger than the sum of its proper divisors (308983).

40459481 is a wasteful number, since it uses less digits than its factorization.

40459481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308982.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 40459481 is about 6360.7767607424. The cubic root of 40459481 is about 343.2997094249.

The spelling of 40459481 in words is "forty million, four hundred fifty-nine thousand, four hundred eighty-one".