40472669 has 4 divisors (see below), whose sum is σ = 40489020. Its totient is φ = 40456320.

The previous prime is 40472659. The next prime is 40472683. The reversal of 40472669 is 96627404.

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 19035769 + 21436900 = 4363^2 + 4630^2 .

It is a cyclic number.

It is not a de Polignac number, because 40472669 - 2¹² = 40468573 is a prime.

It is a super-2 number, since 2×40472669² = 3276073871967122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40472659) 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, 3614 + ... + 9695.

It is an arithmetic number, because the mean of its divisors is an integer number (10122255).

Almost surely, 2^40472669 is an apocalyptic number.

It is an amenable number.

40472669 is a deficient number, since it is larger than the sum of its proper divisors (16351).

40472669 is a wasteful number, since it uses less digits than its factorization.

40472669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16350.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 40472669 is about 6361.8133421219. The cubic root of 40472669 is about 343.3370055430.

The spelling of 40472669 in words is "forty million, four hundred seventy-two thousand, six hundred sixty-nine".