1089980407 has 4 divisors (see below), whose sum is σ = 1091630056. Its totient is φ = 1088330760.

The previous prime is 1089980393. The next prime is 1089980413. The reversal of 1089980407 is 7040899801.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089980407 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 (1089980497) 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, 823833 + ... + 825154.

It is an arithmetic number, because the mean of its divisors is an integer number (272907514).

Almost surely, 2^1089980407 is an apocalyptic number.

1089980407 is a deficient number, since it is larger than the sum of its proper divisors (1649649).

1089980407 is an equidigital number, since it uses as much as digits as its factorization.

1089980407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649648.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 1089980407 is about 33014.8513096758. The cubic root of 1089980407 is about 1029.1363001773.

The spelling of 1089980407 in words is "one billion, eighty-nine million, nine hundred eighty thousand, four hundred seven".