100490947 has 2 divisors, whose sum is σ = 100490948. Its totient is φ = 100490946.

The previous prime is 100490941. The next prime is 100490977. The reversal of 100490947 is 749094001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100490947 is a prime.

It is not a weakly prime, because it can be changed into another prime (100490941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50245473 + 50245474.

It is an arithmetic number, because the mean of its divisors is an integer number (50245474).

Almost surely, 2^100490947 is an apocalyptic number.

100490947 is a deficient number, since it is larger than the sum of its proper divisors (1).

100490947 is an equidigital number, since it uses as much as digits as its factorization.

100490947 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 100490947 is about 10024.5172951120. The cubic root of 100490947 is about 464.9172350480.

The spelling of 100490947 in words is "one hundred million, four hundred ninety thousand, nine hundred forty-seven".