109897477 has 2 divisors, whose sum is σ = 109897478. Its totient is φ = 109897476.

The previous prime is 109897457. The next prime is 109897499. The reversal of 109897477 is 774798901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108139201 + 1758276 = 10399^2 + 1326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109897477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109897457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54948738 + 54948739.

It is an arithmetic number, because the mean of its divisors is an integer number (54948739).

Almost surely, 2^109897477 is an apocalyptic number.

It is an amenable number.

109897477 is a deficient number, since it is larger than the sum of its proper divisors (1).

109897477 is an equidigital number, since it uses as much as digits as its factorization.

109897477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 109897477 is about 10483.1997500763. The cubic root of 109897477 is about 478.9930816364.

The spelling of 109897477 in words is "one hundred nine million, eight hundred ninety-seven thousand, four hundred seventy-seven".