40169161 has 8 divisors (see below), whose sum is σ = 42134400. Its totient is φ = 38250288.

The previous prime is 40169159. The next prime is 40169179. The reversal of 40169161 is 16196104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40169161 - 2¹ = 40169159 is a prime.

It is a super-2 number, since 2×40169161² = 3227122990887842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40169131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9811 + ... + 13288.

It is an arithmetic number, because the mean of its divisors is an integer number (5266800).

Almost surely, 2^40169161 is an apocalyptic number.

It is an amenable number.

40169161 is a deficient number, since it is larger than the sum of its proper divisors (1965239).

40169161 is a wasteful number, since it uses less digits than its factorization.

40169161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23183.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 40169161 is about 6337.9145623778. The cubic root of 40169161 is about 342.4766133889.

The spelling of 40169161 in words is "forty million, one hundred sixty-nine thousand, one hundred sixty-one".