1409421857 has 8 divisors (see below), whose sum is σ = 1430889600. Its totient is φ = 1388044944.

The previous prime is 1409421823. The next prime is 1409421859. The reversal of 1409421857 is 7581249041.

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 1409421857 - 2²² = 1405227553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1409421859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8894 + ... + 53832.

It is an arithmetic number, because the mean of its divisors is an integer number (178861200).

Almost surely, 2^1409421857 is an apocalyptic number.

It is an amenable number.

1409421857 is a deficient number, since it is larger than the sum of its proper divisors (21467743).

1409421857 is an equidigital number, since it uses as much as digits as its factorization.

1409421857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45415.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1409421857 is about 37542.2676059931. The cubic root of 1409421857 is about 1121.1928874596.

The spelling of 1409421857 in words is "one billion, four hundred nine million, four hundred twenty-one thousand, eight hundred fifty-seven".