40173953 has 2 divisors, whose sum is σ = 40173954. Its totient is φ = 40173952.

The previous prime is 40173943. The next prime is 40173967. The reversal of 40173953 is 35937104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40157569 + 16384 = 6337^2 + 128^2 .

It is a cyclic number.

It is not a de Polignac number, because 40173953 - 2⁸ = 40173697 is a prime.

It is a super-2 number, since 2×40173953² = 3227892999292418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40173943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20086976 + 20086977.

It is an arithmetic number, because the mean of its divisors is an integer number (20086977).

Almost surely, 2^40173953 is an apocalyptic number.

It is an amenable number.

40173953 is a deficient number, since it is larger than the sum of its proper divisors (1).

40173953 is an equidigital number, since it uses as much as digits as its factorization.

40173953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 40173953 is about 6338.2925934356. The cubic root of 40173953 is about 342.4902314865.

The spelling of 40173953 in words is "forty million, one hundred seventy-three thousand, nine hundred fifty-three".