1098479947 has 4 divisors (see below), whose sum is σ = 1133914816. Its totient is φ = 1063045080.

The previous prime is 1098479929. The next prime is 1098479957. The reversal of 1098479947 is 7499748901.

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 1098479947 - 2²³ = 1090091339 is a prime.

It is a super-3 number, since 3×1098479947³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1098479891 and 1098479900.

It is not an unprimeable number, because it can be changed into a prime (1098479917) 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, 17717388 + ... + 17717449.

It is an arithmetic number, because the mean of its divisors is an integer number (283478704).

Almost surely, 2^1098479947 is an apocalyptic number.

1098479947 is a deficient number, since it is larger than the sum of its proper divisors (35434869).

1098479947 is an equidigital number, since it uses as much as digits as its factorization.

1098479947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35434868.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The square root of 1098479947 is about 33143.3243202911. The cubic root of 1098479947 is about 1031.8044052099.

The spelling of 1098479947 in words is "one billion, ninety-eight million, four hundred seventy-nine thousand, nine hundred forty-seven".