780384955 has 16 divisors (see below), whose sum is σ = 1080066240. Its totient is φ = 530209152.

The previous prime is 780384937. The next prime is 780384973. The reversal of 780384955 is 559483087.

It is an interprime number because it is at equal distance from previous prime (780384937) and next prime (780384973).

It is a cyclic number.

It is not a de Polignac number, because 780384955 - 2¹¹ = 780382907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780384899 and 780384908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98464 + ... + 106093.

It is an arithmetic number, because the mean of its divisors is an integer number (67504140).

Almost surely, 2^780384955 is an apocalyptic number.

780384955 is a deficient number, since it is larger than the sum of its proper divisors (299681285).

780384955 is a wasteful number, since it uses less digits than its factorization.

780384955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204678.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 780384955 is about 27935.3710374500. The cubic root of 780384955 is about 920.6678181295.

The spelling of 780384955 in words is "seven hundred eighty million, three hundred eighty-four thousand, nine hundred fifty-five".