1409496891 has 16 divisors (see below), whose sum is σ = 2052787968. Its totient is φ = 853152800.

The previous prime is 1409496887. The next prime is 1409496929. The reversal of 1409496891 is 1986949041.

It is a cyclic number.

It is not a de Polignac number, because 1409496891 - 2² = 1409496887 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1409496791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495 + ... + 53096.

It is an arithmetic number, because the mean of its divisors is an integer number (128299248).

Almost surely, 2^1409496891 is an apocalyptic number.

1409496891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1409496891 is a deficient number, since it is larger than the sum of its proper divisors (643291077).

1409496891 is a wasteful number, since it uses less digits than its factorization.

1409496891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54402.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 1409496891 is about 37543.2669196489. The cubic root of 1409496891 is about 1121.2127835832.

The spelling of 1409496891 in words is "one billion, four hundred nine million, four hundred ninety-six thousand, eight hundred ninety-one".