40729433 has 4 divisors (see below), whose sum is σ = 43125300. Its totient is φ = 38333568.

The previous prime is 40729417. The next prime is 40729453. The reversal of 40729433 is 33492704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27164944 + 13564489 = 5212^2 + 3683^2 .

It is a cyclic number.

It is not a de Polignac number, because 40729433 - 2⁴ = 40729417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40729433.

It is not an unprimeable number, because it can be changed into a prime (40729453) 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, 1197908 + ... + 1197941.

It is an arithmetic number, because the mean of its divisors is an integer number (10781325).

Almost surely, 2^40729433 is an apocalyptic number.

It is an amenable number.

40729433 is a deficient number, since it is larger than the sum of its proper divisors (2395867).

40729433 is a wasteful number, since it uses less digits than its factorization.

40729433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395866.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 40729433 is about 6381.9615323190. The cubic root of 40729433 is about 344.0615340842.

The spelling of 40729433 in words is "forty million, seven hundred twenty-nine thousand, four hundred thirty-three".