6390450105 has 32 divisors (see below), whose sum is σ = 11027729664. Its totient is φ = 3141355776.

The previous prime is 6390450089. The next prime is 6390450133. The reversal of 6390450105 is 5010540936.

It is a happy number.

It is not a de Polignac number, because 6390450105 - 2⁴ = 6390450089 is a prime.

It is a super-2 number, since 2×6390450105² = 81675705088989022050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107812 + ... + 156218.

It is an arithmetic number, because the mean of its divisors is an integer number (344616552).

Almost surely, 2^6390450105 is an apocalyptic number.

6390450105 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6390450105 is a deficient number, since it is larger than the sum of its proper divisors (4637279559).

6390450105 is a wasteful number, since it uses less digits than its factorization.

6390450105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49105.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 6390450105 is about 79940.2908738766. The cubic root of 6390450105 is about 1855.7116011127.

The spelling of 6390450105 in words is "six billion, three hundred ninety million, four hundred fifty thousand, one hundred five".