40721935 has 4 divisors (see below), whose sum is σ = 48866328. Its totient is φ = 32577544.

The previous prime is 40721929. The next prime is 40721969. The reversal of 40721935 is 53912704.

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

It is a cyclic number.

It is not a de Polignac number, because 40721935 - 2³ = 40721927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40721897 and 40721906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4072189 + ... + 4072198.

It is an arithmetic number, because the mean of its divisors is an integer number (12216582).

Almost surely, 2^40721935 is an apocalyptic number.

40721935 is a deficient number, since it is larger than the sum of its proper divisors (8144393).

40721935 is an equidigital number, since it uses as much as digits as its factorization.

40721935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8144392.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 40721935 is about 6381.3740683336. The cubic root of 40721935 is about 344.0404196917.

The spelling of 40721935 in words is "forty million, seven hundred twenty-one thousand, nine hundred thirty-five".