1420957669 has 4 divisors (see below), whose sum is σ = 1428896160. Its totient is φ = 1413019180.

The previous prime is 1420957667. The next prime is 1420957691. The reversal of 1420957669 is 9667590241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1420957669 - 2¹ = 1420957667 is a prime.

It is a super-2 number, since 2×1420957669² = 4038241394179827122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420957667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3968977 + ... + 3969334.

It is an arithmetic number, because the mean of its divisors is an integer number (357224040).

Almost surely, 2^1420957669 is an apocalyptic number.

It is an amenable number.

1420957669 is a deficient number, since it is larger than the sum of its proper divisors (7938491).

1420957669 is an equidigital number, since it uses as much as digits as its factorization.

1420957669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7938490.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1420957669 is about 37695.5921693770. The cubic root of 1420957669 is about 1124.2434865193.

The spelling of 1420957669 in words is "one billion, four hundred twenty million, nine hundred fifty-seven thousand, six hundred sixty-nine".