1090472391 has 6 divisors (see below), whose sum is σ = 1575126800. Its totient is φ = 726981588.

The previous prime is 1090472371. The next prime is 1090472401. The reversal of 1090472391 is 1932740901.

1090472391 is a `hidden beast` number, since 10 + 90 + 472 + 3 + 91 = 666.

It is not a de Polignac number, because 1090472391 - 2¹⁰ = 1090471367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090472371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60581791 + ... + 60581808.

Almost surely, 2^1090472391 is an apocalyptic number.

1090472391 is a deficient number, since it is larger than the sum of its proper divisors (484654409).

1090472391 is a wasteful number, since it uses less digits than its factorization.

1090472391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121163605 (or 121163602 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1090472391 is about 33022.3014188896. The cubic root of 1090472391 is about 1029.2911171600.

The spelling of 1090472391 in words is "one billion, ninety million, four hundred seventy-two thousand, three hundred ninety-one".