40123469 has 2 divisors, whose sum is σ = 40123470. Its totient is φ = 40123468.

The previous prime is 40123453. The next prime is 40123471. The reversal of 40123469 is 96432104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29560969 + 10562500 = 5437^2 + 3250^2 .

It is a cyclic number.

It is not a de Polignac number, because 40123469 - 2⁴ = 40123453 is a prime.

It is a super-2 number, since 2×40123469² = 3219785529187922, which contains 22 as substring.

Together with 40123471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40123409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061734 + 20061735.

It is an arithmetic number, because the mean of its divisors is an integer number (20061735).

Almost surely, 2^40123469 is an apocalyptic number.

It is an amenable number.

40123469 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123469 is an equidigital number, since it uses as much as digits as its factorization.

40123469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 40123469 is about 6334.3088810067. The cubic root of 40123469 is about 342.3467096012.

The spelling of 40123469 in words is "forty million, one hundred twenty-three thousand, four hundred sixty-nine".