109400947 has 2 divisors, whose sum is σ = 109400948. Its totient is φ = 109400946.

The previous prime is 109400911. The next prime is 109400969. The reversal of 109400947 is 749004901.

It is a strong prime.

It is an emirp because it is prime and its reverse (749004901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109400947 is a prime.

It is not a weakly prime, because it can be changed into another prime (109400747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54700473 + 54700474.

It is an arithmetic number, because the mean of its divisors is an integer number (54700474).

Almost surely, 2^109400947 is an apocalyptic number.

109400947 is a deficient number, since it is larger than the sum of its proper divisors (1).

109400947 is an equidigital number, since it uses as much as digits as its factorization.

109400947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 109400947 is about 10459.4907619826. The cubic root of 109400947 is about 478.2706097129.

The spelling of 109400947 in words is "one hundred nine million, four hundred thousand, nine hundred forty-seven".