1409799420 has 72 divisors (see below), whose sum is σ = 4304795040. Its totient is φ = 373449600.

The previous prime is 1409799367. The next prime is 1409799437. The reversal of 1409799420 is 249979041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1246 + ... + 53114.

It is an arithmetic number, because the mean of its divisors is an integer number (59788820).

Almost surely, 2^1409799420 is an apocalyptic number.

1409799420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1409799420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2152397520).

1409799420 is an abundant number, since it is smaller than the sum of its proper divisors (2894995620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1409799420 is a wasteful number, since it uses less digits than its factorization.

1409799420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52035 (or 52030 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1409799420 is about 37547.2957747958. The cubic root of 1409799420 is about 1121.2929954468.

The spelling of 1409799420 in words is "one billion, four hundred nine million, seven hundred ninety-nine thousand, four hundred twenty".