40691379 has 16 divisors (see below), whose sum is σ = 57647520. Its totient is φ = 25482240.

The previous prime is 40691363. The next prime is 40691383. The reversal of 40691379 is 97319604.

It is not a de Polignac number, because 40691379 - 2⁴ = 40691363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40691389) 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, 3102 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (3602970).

Almost surely, 2^40691379 is an apocalyptic number.

40691379 is a deficient number, since it is larger than the sum of its proper divisors (16956141).

40691379 is a wasteful number, since it uses less digits than its factorization.

40691379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 40691379 is about 6378.9794638328. The cubic root of 40691379 is about 343.9543470829.

The spelling of 40691379 in words is "forty million, six hundred ninety-one thousand, three hundred seventy-nine".