1409444091 has 16 divisors (see below), whose sum is σ = 2277889920. Its totient is φ = 854208360.

The previous prime is 1409444087. The next prime is 1409444119. The reversal of 1409444091 is 1904449041.

1409444091 is a `hidden beast` number, since 1 + 40 + 94 + 440 + 91 = 666.

It is not a de Polignac number, because 1409444091 - 2² = 1409444087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1409444591) 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, 2372505 + ... + 2373098.

It is an arithmetic number, because the mean of its divisors is an integer number (142368120).

Almost surely, 2^1409444091 is an apocalyptic number.

1409444091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1409444091 is a deficient number, since it is larger than the sum of its proper divisors (868445829).

1409444091 is a wasteful number, since it uses less digits than its factorization.

1409444091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745623 (or 4745617 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1409444091 is about 37542.5637243915. The cubic root of 1409444091 is about 1121.1987831327.

It can be divided in two parts, 14094 and 44091, that added together give a palindrome (58185).

The spelling of 1409444091 in words is "one billion, four hundred nine million, four hundred forty-four thousand, ninety-one".