40202069 has 6 divisors (see below), whose sum is σ = 40898550. Its totient is φ = 39517256.

The previous prime is 40202051. The next prime is 40202083. The reversal of 40202069 is 96020204.

It can be written as a sum of positive squares in only one way, i.e., 39853969 + 348100 = 6313^2 + 590^2 .

It is not a de Polignac number, because 40202069 - 2⁸ = 40201813 is a prime.

It is a super-2 number, since 2×40202069² = 3232412703761522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40202269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2294 + ... + 9255.

It is an arithmetic number, because the mean of its divisors is an integer number (6816425).

Almost surely, 2^40202069 is an apocalyptic number.

It is an amenable number.

40202069 is a deficient number, since it is larger than the sum of its proper divisors (696481).

40202069 is an equidigital number, since it uses as much as digits as its factorization.

40202069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11667 (or 11608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40202069 is about 6340.5101529767. The cubic root of 40202069 is about 342.5701108536.

The spelling of 40202069 in words is "forty million, two hundred two thousand, sixty-nine".