40627021 has 4 divisors (see below), whose sum is σ = 40641472. Its totient is φ = 40612572.

The previous prime is 40627007. The next prime is 40627031. The reversal of 40627021 is 12072604.

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 40627021 - 2²³ = 32238413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40626983 and 40627001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40627031) 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, 1491 + ... + 9136.

It is an arithmetic number, because the mean of its divisors is an integer number (10160368).

Almost surely, 2^40627021 is an apocalyptic number.

It is an amenable number.

40627021 is a deficient number, since it is larger than the sum of its proper divisors (14451).

40627021 is a wasteful number, since it uses less digits than its factorization.

40627021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14450.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 40627021 is about 6373.9329303029. The cubic root of 40627021 is about 343.7729172159.

Adding to 40627021 its reverse (12072604), we get a palindrome (52699625).

The spelling of 40627021 in words is "forty million, six hundred twenty-seven thousand, twenty-one".