7838955 has 24 divisors (see below), whose sum is σ = 14388192. Its totient is φ = 3934464.

The previous prime is 7838951. The next prime is 7838969. The reversal of 7838955 is 5598387.

It is not a de Polignac number, because 7838955 - 2² = 7838951 is a prime.

It is a super-2 number, since 2×7838955² = 122898430984050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

7838955 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7838955.

It is not an unprimeable number, because it can be changed into a prime (7838951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4359 + ... + 5888.

It is an arithmetic number, because the mean of its divisors is an integer number (599508).

Almost surely, 2^7838955 is an apocalyptic number.

7838955 is a deficient number, since it is larger than the sum of its proper divisors (6549237).

7838955 is a wasteful number, since it uses less digits than its factorization.

7838955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275 (or 10272 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 7838955 is about 2799.8133866385. The cubic root of 7838955 is about 198.6488508690.

The spelling of 7838955 in words is "seven million, eight hundred thirty-eight thousand, nine hundred fifty-five".