2905923387 has 6 divisors (see below), whose sum is σ = 3874689012. Its totient is φ = 1937220012.

The previous prime is 2905923343. The next prime is 2905923409. The reversal of 2905923387 is 7833295092.

It is a happy number.

It is not a de Polignac number, because 2905923387 - 2⁷ = 2905923259 is a prime.

It is a super-2 number, since 2×2905923387² = 16888781462227103538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2905943387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77808 + ... + 108930.

It is an arithmetic number, because the mean of its divisors is an integer number (645781502).

Almost surely, 2^2905923387 is an apocalyptic number.

2905923387 is a deficient number, since it is larger than the sum of its proper divisors (968765625).

2905923387 is an frugal number, since it uses more digits than its factorization.

2905923387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62249 (or 31126 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 2905923387 is about 53906.6172839662. The cubic root of 2905923387 is about 1427.0134070068.

Multiplying 2905923387 by its sum of digits (48), we get a square (139484322576 = 373476²).

The spelling of 2905923387 in words is "two billion, nine hundred five million, nine hundred twenty-three thousand, three hundred eighty-seven".