1409809672 has 8 divisors (see below), whose sum is σ = 2643393150. Its totient is φ = 704904832.

The previous prime is 1409809663. The next prime is 1409809673. The reversal of 1409809672 is 2769089041.

It can be written as a sum of positive squares in only one way, i.e., 1307111716 + 102697956 = 36154^2 + 10134^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1409809672² = 3975126622529495168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1409809673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88113097 + ... + 88113112.

Almost surely, 2^1409809672 is an apocalyptic number.

It is an amenable number.

1409809672 is a deficient number, since it is larger than the sum of its proper divisors (1233583478).

1409809672 is a wasteful number, since it uses less digits than its factorization.

1409809672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176226215 (or 176226211 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1409809672 is about 37547.4322956977. The cubic root of 1409809672 is about 1121.2957134381.

The spelling of 1409809672 in words is "one billion, four hundred nine million, eight hundred nine thousand, six hundred seventy-two".