40385461 has 4 divisors (see below), whose sum is σ = 40398624. Its totient is φ = 40372300.

The previous prime is 40385419. The next prime is 40385473. The reversal of 40385461 is 16458304.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40385461 - 2⁷ = 40385333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40385161) 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, 726 + ... + 9016.

It is an arithmetic number, because the mean of its divisors is an integer number (10099656).

Almost surely, 2^40385461 is an apocalyptic number.

It is an amenable number.

40385461 is a deficient number, since it is larger than the sum of its proper divisors (13163).

40385461 is an equidigital number, since it uses as much as digits as its factorization.

40385461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13162.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 40385461 is about 6354.9556253368. The cubic root of 40385461 is about 343.0902277739.

The spelling of 40385461 in words is "forty million, three hundred eighty-five thousand, four hundred sixty-one".