40630973 has 4 divisors (see below), whose sum is σ = 40669440. Its totient is φ = 40592508.

The previous prime is 40630963. The next prime is 40630979. The reversal of 40630973 is 37903604.

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 40630973 - 2¹² = 40626877 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 (40630979) 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, 17603 + ... + 19776.

It is an arithmetic number, because the mean of its divisors is an integer number (10167360).

Almost surely, 2^40630973 is an apocalyptic number.

It is an amenable number.

40630973 is a deficient number, since it is larger than the sum of its proper divisors (38467).

40630973 is a wasteful number, since it uses less digits than its factorization.

40630973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38466.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 40630973 is about 6374.2429354395. The cubic root of 40630973 is about 343.7840637098.

The spelling of 40630973 in words is "forty million, six hundred thirty thousand, nine hundred seventy-three".