40696969 has 4 divisors (see below), whose sum is σ = 41689620. Its totient is φ = 39704320.

The previous prime is 40696937. The next prime is 40696979. The reversal of 40696969 is 96969604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5234944 + 35462025 = 2288^2 + 5955^2 .

It is a cyclic number.

It is not a de Polignac number, because 40696969 - 2⁵ = 40696937 is a prime.

It is a super-2 number, since 2×40696969² = 3312486571573922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40696979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496264 + ... + 496345.

It is an arithmetic number, because the mean of its divisors is an integer number (10422405).

Almost surely, 2^40696969 is an apocalyptic number.

It is an amenable number.

40696969 is a deficient number, since it is larger than the sum of its proper divisors (992651).

40696969 is an equidigital number, since it uses as much as digits as its factorization.

40696969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992650.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 40696969 is about 6379.4176066472. The cubic root of 40696969 is about 343.9700966660.

The spelling of 40696969 in words is "forty million, six hundred ninety-six thousand, nine hundred sixty-nine".