890997403 has 2 divisors, whose sum is σ = 890997404. Its totient is φ = 890997402.

The previous prime is 890997361. The next prime is 890997439. The reversal of 890997403 is 304799098.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890997403 is a prime.

It is not a weakly prime, because it can be changed into another prime (890997463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445498701 + 445498702.

It is an arithmetic number, because the mean of its divisors is an integer number (445498702).

Almost surely, 2^890997403 is an apocalyptic number.

890997403 is a deficient number, since it is larger than the sum of its proper divisors (1).

890997403 is an equidigital number, since it uses as much as digits as its factorization.

890997403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 890997403 is about 29849.5796117801. The cubic root of 890997403 is about 962.2593640970.

The spelling of 890997403 in words is "eight hundred ninety million, nine hundred ninety-seven thousand, four hundred three".