40992769 has 4 divisors (see below), whose sum is σ = 41398740. Its totient is φ = 40586800.

The previous prime is 40992767. The next prime is 40992779. The reversal of 40992769 is 96729904.

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 40449600 + 543169 = 6360^2 + 737^2 .

It is a cyclic number.

It is not a de Polignac number, because 40992769 - 2¹ = 40992767 is a prime.

It is a super-2 number, since 2×40992769² = 3360814220574722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40992761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202834 + ... + 203035.

It is an arithmetic number, because the mean of its divisors is an integer number (10349685).

It is a Proth number, since it is equal to 1251 ⋅ 2¹⁵ + 1 and 1251 < 2¹⁵.

Almost surely, 2^40992769 is an apocalyptic number.

It is an amenable number.

40992769 is a deficient number, since it is larger than the sum of its proper divisors (405971).

40992769 is a wasteful number, since it uses less digits than its factorization.

40992769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405970.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 40992769 is about 6402.5595662985. The cubic root of 40992769 is about 344.8014512538.

The spelling of 40992769 in words is "forty million, nine hundred ninety-two thousand, seven hundred sixty-nine".