40691793 has 8 divisors (see below), whose sum is σ = 54495648. Its totient is φ = 27007904.

The previous prime is 40691753. The next prime is 40691797. The reversal of 40691793 is 39719604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40691793 - 2⁹ = 40691281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40691797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29196 + ... + 30557.

It is an arithmetic number, because the mean of its divisors is an integer number (6811956).

Almost surely, 2^40691793 is an apocalyptic number.

It is an amenable number.

40691793 is a deficient number, since it is larger than the sum of its proper divisors (13803855).

40691793 is a wasteful number, since it uses less digits than its factorization.

40691793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59983.

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

The square root of 40691793 is about 6379.0119140820. The cubic root of 40691793 is about 343.9555135595.

The spelling of 40691793 in words is "forty million, six hundred ninety-one thousand, seven hundred ninety-three".