1421880393 has 8 divisors (see below), whose sum is σ = 1909679328. Its totient is φ = 941000864.

The previous prime is 1421880389. The next prime is 1421880407. The reversal of 1421880393 is 3930881241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421880393 - 2² = 1421880389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421880373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1729371 + ... + 1730192.

It is an arithmetic number, because the mean of its divisors is an integer number (238709916).

Almost surely, 2^1421880393 is an apocalyptic number.

It is an amenable number.

1421880393 is a deficient number, since it is larger than the sum of its proper divisors (487798935).

1421880393 is a wasteful number, since it uses less digits than its factorization.

1421880393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459703.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1421880393 is about 37707.8293329118. The cubic root of 1421880393 is about 1124.4867829961.

The spelling of 1421880393 in words is "one billion, four hundred twenty-one million, eight hundred eighty thousand, three hundred ninety-three".