40297069 has 2 divisors, whose sum is σ = 40297070. Its totient is φ = 40297068.

The previous prime is 40297067. The next prime is 40297091. The reversal of 40297069 is 96079204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30140100 + 10156969 = 5490^2 + 3187^2 .

It is a cyclic number.

It is not a de Polignac number, because 40297069 - 2¹ = 40297067 is a prime.

It is a super-2 number, since 2×40297069² = 3247707539981522, which contains 22 as substring.

Together with 40297067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40297067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20148534 + 20148535.

It is an arithmetic number, because the mean of its divisors is an integer number (20148535).

Almost surely, 2^40297069 is an apocalyptic number.

It is an amenable number.

40297069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40297069 is an equidigital number, since it uses as much as digits as its factorization.

40297069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 40297069 is about 6347.9972432256. The cubic root of 40297069 is about 342.8397367734.

The spelling of 40297069 in words is "forty million, two hundred ninety-seven thousand, sixty-nine".