40829691 has 16 divisors (see below), whose sum is σ = 63488000. Its totient is φ = 23330664.

The previous prime is 40829683. The next prime is 40829693. The reversal of 40829691 is 19692804.

It is not a de Polignac number, because 40829691 - 2³ = 40829683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40829693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18811 + ... + 20868.

It is an arithmetic number, because the mean of its divisors is an integer number (3968000).

Almost surely, 2^40829691 is an apocalyptic number.

40829691 is a deficient number, since it is larger than the sum of its proper divisors (22658309).

40829691 is an equidigital number, since it uses as much as digits as its factorization.

40829691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39703 (or 39689 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 40829691 is about 6389.8114995671. The cubic root of 40829691 is about 344.3436122899.

The spelling of 40829691 in words is "forty million, eight hundred twenty-nine thousand, six hundred ninety-one".