898190387 has 2 divisors, whose sum is σ = 898190388. Its totient is φ = 898190386.

The previous prime is 898190383. The next prime is 898190437. The reversal of 898190387 is 783091898.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 898190387 - 2² = 898190383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (898190383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449095193 + 449095194.

It is an arithmetic number, because the mean of its divisors is an integer number (449095194).

Almost surely, 2^898190387 is an apocalyptic number.

898190387 is a deficient number, since it is larger than the sum of its proper divisors (1).

898190387 is an equidigital number, since it uses as much as digits as its factorization.

898190387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 898190387 is about 29969.8246074281. The cubic root of 898190387 is about 964.8418533290.

The spelling of 898190387 in words is "eight hundred ninety-eight million, one hundred ninety thousand, three hundred eighty-seven".