40546779 has 32 divisors (see below), whose sum is σ = 70049280. Its totient is φ = 20259072.

The previous prime is 40546771. The next prime is 40546787. The reversal of 40546779 is 97764504.

It is an interprime number because it is at equal distance from previous prime (40546771) and next prime (40546787).

It is not a de Polignac number, because 40546779 - 2³ = 40546771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40546779.

It is not an unprimeable number, because it can be changed into a prime (40546771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1279 + ... + 9095.

It is an arithmetic number, because the mean of its divisors is an integer number (2189040).

Almost surely, 2^40546779 is an apocalyptic number.

40546779 is a deficient number, since it is larger than the sum of its proper divisors (29502501).

40546779 is a wasteful number, since it uses less digits than its factorization.

40546779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 40546779 is about 6367.6352753593. The cubic root of 40546779 is about 343.5464406275.

The spelling of 40546779 in words is "forty million, five hundred forty-six thousand, seven hundred seventy-nine".