1090747989 has 12 divisors (see below), whose sum is σ = 1626348672. Its totient is φ = 703708200.

The previous prime is 1090747967. The next prime is 1090747993. The reversal of 1090747989 is 9897470901.

1090747989 is a `hidden beast` number, since 1 + 0 + 90 + 7 + 479 + 89 = 666.

It is not a de Polignac number, because 1090747989 - 2⁸ = 1090747733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090746989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1954467 + ... + 1955024.

It is an arithmetic number, because the mean of its divisors is an integer number (135529056).

Almost surely, 2^1090747989 is an apocalyptic number.

It is an amenable number.

1090747989 is a deficient number, since it is larger than the sum of its proper divisors (535600683).

1090747989 is a wasteful number, since it uses less digits than its factorization.

1090747989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909528 (or 3909525 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 1090747989 is about 33026.4740624851. The cubic root of 1090747989 is about 1029.3778216872.

The spelling of 1090747989 in words is "one billion, ninety million, seven hundred forty-seven thousand, nine hundred eighty-nine".