40699569 has 4 divisors (see below), whose sum is σ = 54266096. Its totient is φ = 27133044.

The previous prime is 40699567. The next prime is 40699573. The reversal of 40699569 is 96599604.

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 not a de Polignac number, because 40699569 - 2¹ = 40699567 is a prime.

It is a super-3 number, since 3×40699569³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40699567) 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, 6783259 + ... + 6783264.

It is an arithmetic number, because the mean of its divisors is an integer number (13566524).

Almost surely, 2^40699569 is an apocalyptic number.

It is an amenable number.

40699569 is a deficient number, since it is larger than the sum of its proper divisors (13566527).

40699569 is a wasteful number, since it uses less digits than its factorization.

40699569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13566526.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 40699569 is about 6379.6213837500. The cubic root of 40699569 is about 343.9774215621.

The spelling of 40699569 in words is "forty million, six hundred ninety-nine thousand, five hundred sixty-nine".