1472021669 has 2 divisors, whose sum is σ = 1472021670. Its totient is φ = 1472021668.

The previous prime is 1472021651. The next prime is 1472021671. The reversal of 1472021669 is 9661202741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1287876769 + 184144900 = 35887^2 + 13570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1472021669 is a prime.

It is a super-2 number, since 2×1472021669² = 4333695588011091122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1472021671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1472021699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736010834 + 736010835.

It is an arithmetic number, because the mean of its divisors is an integer number (736010835).

Almost surely, 2^1472021669 is an apocalyptic number.

It is an amenable number.

1472021669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1472021669 is an equidigital number, since it uses as much as digits as its factorization.

1472021669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1472021669 is about 38366.9345791399. The cubic root of 1472021669 is about 1137.5523737750.

The spelling of 1472021669 in words is "one billion, four hundred seventy-two million, twenty-one thousand, six hundred sixty-nine".