1099398931 has 8 divisors (see below), whose sum is σ = 1125419504. Its totient is φ = 1073399040.

The previous prime is 1099398929. The next prime is 1099398941. The reversal of 1099398931 is 1398939901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1099398931 - 2¹ = 1099398929 is a prime.

It is a super-2 number, since 2×1099398931² = 2417356018967885522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099398901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176551 + ... + 182671.

It is an arithmetic number, because the mean of its divisors is an integer number (140677438).

Almost surely, 2^1099398931 is an apocalyptic number.

1099398931 is a deficient number, since it is larger than the sum of its proper divisors (26020573).

1099398931 is an equidigital number, since it uses as much as digits as its factorization.

1099398931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341.

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 1099398931 is about 33157.1852092424. The cubic root of 1099398931 is about 1032.0920595094.

The spelling of 1099398931 in words is "one billion, ninety-nine million, three hundred ninety-eight thousand, nine hundred thirty-one".