103498991 has 2 divisors, whose sum is σ = 103498992. Its totient is φ = 103498990.

The previous prime is 103498981. The next prime is 103499063. The reversal of 103498991 is 199894301.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103498991 is a prime.

It is a super-2 number, since 2×103498991² = 21424082276036162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103498931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51749495 + 51749496.

It is an arithmetic number, because the mean of its divisors is an integer number (51749496).

Almost surely, 2^103498991 is an apocalyptic number.

103498991 is a deficient number, since it is larger than the sum of its proper divisors (1).

103498991 is an equidigital number, since it uses as much as digits as its factorization.

103498991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 103498991 is about 10173.4453849225. The cubic root of 103498991 is about 469.5105679199.

The spelling of 103498991 in words is "one hundred three million, four hundred ninety-eight thousand, nine hundred ninety-one".