40691201 has 4 divisors (see below), whose sum is σ = 41637552. Its totient is φ = 39744852.

The previous prime is 40691159. The next prime is 40691207. The reversal of 40691201 is 10219604.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40691201 - 2²² = 36496897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40691207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473111 + ... + 473196.

It is an arithmetic number, because the mean of its divisors is an integer number (10409388).

Almost surely, 2^40691201 is an apocalyptic number.

It is an amenable number.

40691201 is a deficient number, since it is larger than the sum of its proper divisors (946351).

40691201 is an equidigital number, since it uses as much as digits as its factorization.

40691201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946350.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 40691201 is about 6378.9655117425. The cubic root of 40691201 is about 343.9538455519.

The spelling of 40691201 in words is "forty million, six hundred ninety-one thousand, two hundred one".