1421223399 has 6 divisors (see below), whose sum is σ = 2052878256. Its totient is φ = 947482260.

The previous prime is 1421223379. The next prime is 1421223413. The reversal of 1421223399 is 9933221241.

1421223399 is a `hidden beast` number, since 1 + 42 + 1 + 223 + 399 = 666.

It is not a de Polignac number, because 1421223399 - 2²⁰ = 1420174823 is a prime.

It is a super-2 number, since 2×1421223399² = 4039751899730226402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421223379) 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 in 5 ways as a sum of consecutive naturals, for example, 78956847 + ... + 78956864.

It is an arithmetic number, because the mean of its divisors is an integer number (342146376).

Almost surely, 2^1421223399 is an apocalyptic number.

1421223399 is a deficient number, since it is larger than the sum of its proper divisors (631654857).

1421223399 is a wasteful number, since it uses less digits than its factorization.

1421223399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157913717 (or 157913714 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 1421223399 is about 37699.1166872647. The cubic root of 1421223399 is about 1124.3135628740.

The spelling of 1421223399 in words is "one billion, four hundred twenty-one million, two hundred twenty-three thousand, three hundred ninety-nine".