40620169 has 2 divisors, whose sum is σ = 40620170. Its totient is φ = 40620168.

The previous prime is 40620133. The next prime is 40620187. The reversal of 40620169 is 96102604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 170569 = 6360^2 + 413^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40620169 is a prime.

It is a super-2 number, since 2×40620169² = 3299996259177122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40620269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20310084 + 20310085.

It is an arithmetic number, because the mean of its divisors is an integer number (20310085).

Almost surely, 2^40620169 is an apocalyptic number.

It is an amenable number.

40620169 is a deficient number, since it is larger than the sum of its proper divisors (1).

40620169 is an equidigital number, since it uses as much as digits as its factorization.

40620169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 40620169 is about 6373.3954059041. The cubic root of 40620169 is about 343.7535896485.

The spelling of 40620169 in words is "forty million, six hundred twenty thousand, one hundred sixty-nine".