40046621 has 4 divisors (see below), whose sum is σ = 40084032. Its totient is φ = 40009212.

The previous prime is 40046603. The next prime is 40046681. The reversal of 40046621 is 12664004.

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 40046621 - 2⁶ = 40046557 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 (40046681) 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, 17051 + ... + 19256.

It is an arithmetic number, because the mean of its divisors is an integer number (10021008).

Almost surely, 2^40046621 is an apocalyptic number.

It is an amenable number.

40046621 is a deficient number, since it is larger than the sum of its proper divisors (37411).

40046621 is a wasteful number, since it uses less digits than its factorization.

40046621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37410.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40046621 is about 6328.2399606842. The cubic root of 40046621 is about 342.1280057294.

The spelling of 40046621 in words is "forty million, forty-six thousand, six hundred twenty-one".