1090409471 has 4 divisors (see below), whose sum is σ = 1094262792. Its totient is φ = 1086556152.

The previous prime is 1090409459. The next prime is 1090409479. The reversal of 1090409471 is 1749040901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1090409471 - 2¹⁸ = 1090147327 is a prime.

It is a super-3 number, since 3×1090409471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090409479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926236 + ... + 1926801.

It is an arithmetic number, because the mean of its divisors is an integer number (273565698).

Almost surely, 2^1090409471 is an apocalyptic number.

1090409471 is a deficient number, since it is larger than the sum of its proper divisors (3853321).

1090409471 is an equidigital number, since it uses as much as digits as its factorization.

1090409471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853320.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1090409471 is about 33021.3487156415. The cubic root of 1090409471 is about 1029.2713201610.

The spelling of 1090409471 in words is "one billion, ninety million, four hundred nine thousand, four hundred seventy-one".