980403887 has 2 divisors, whose sum is σ = 980403888. Its totient is φ = 980403886.

The previous prime is 980403883. The next prime is 980403901. The reversal of 980403887 is 788304089.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 980403887 - 2² = 980403883 is a prime.

It is a super-2 number, since 2×980403887² = 1922383563289417538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980403881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490201943 + 490201944.

It is an arithmetic number, because the mean of its divisors is an integer number (490201944).

Almost surely, 2^980403887 is an apocalyptic number.

980403887 is a deficient number, since it is larger than the sum of its proper divisors (1).

980403887 is an equidigital number, since it uses as much as digits as its factorization.

980403887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 980403887 is about 31311.4018689678. The cubic root of 980403887 is about 993.4248241506.

The spelling of 980403887 in words is "nine hundred eighty million, four hundred three thousand, eight hundred eighty-seven".