1409538390 has 64 divisors (see below), whose sum is σ = 3684139200. Its totient is φ = 343056384.

The previous prime is 1409538311. The next prime is 1409538397. The reversal of 1409538390 is 938359041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409538397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14406 + ... + 55014.

It is an arithmetic number, because the mean of its divisors is an integer number (57564675).

Almost surely, 2^1409538390 is an apocalyptic number.

1409538390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1409538390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1842069600).

1409538390 is an abundant number, since it is smaller than the sum of its proper divisors (2274600810).

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

1409538390 is a wasteful number, since it uses less digits than its factorization.

1409538390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40721.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1409538390 is about 37543.8195979045. The cubic root of 1409538390 is about 1121.2237872146.

The spelling of 1409538390 in words is "one billion, four hundred nine million, five hundred thirty-eight thousand, three hundred ninety".