870109451 has 2 divisors, whose sum is σ = 870109452. Its totient is φ = 870109450.

The previous prime is 870109439. The next prime is 870109459. The reversal of 870109451 is 154901078.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870109451 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (870109459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435054725 + 435054726.

It is an arithmetic number, because the mean of its divisors is an integer number (435054726).

Almost surely, 2^870109451 is an apocalyptic number.

870109451 is a deficient number, since it is larger than the sum of its proper divisors (1).

870109451 is an equidigital number, since it uses as much as digits as its factorization.

870109451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 870109451 is about 29497.6177173683. The cubic root of 870109451 is about 954.6803023348.

The spelling of 870109451 in words is "eight hundred seventy million, one hundred nine thousand, four hundred fifty-one".