40709453 has 4 divisors (see below), whose sum is σ = 40816128. Its totient is φ = 40602780.

The previous prime is 40709447. The next prime is 40709467. The reversal of 40709453 is 35490704.

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 40709453 - 2⁸ = 40709197 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 (40709443) 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, 52763 + ... + 53528.

It is an arithmetic number, because the mean of its divisors is an integer number (10204032).

Almost surely, 2^40709453 is an apocalyptic number.

It is an amenable number.

40709453 is a deficient number, since it is larger than the sum of its proper divisors (106675).

40709453 is a wasteful number, since it uses less digits than its factorization.

40709453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106674.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 40709453 is about 6380.3959908457. The cubic root of 40709453 is about 344.0052645895.

The spelling of 40709453 in words is "forty million, seven hundred nine thousand, four hundred fifty-three".