6390451449 has 8 divisors (see below), whose sum is σ = 9467335520. Its totient is φ = 4260300948.

The previous prime is 6390451391. The next prime is 6390451477. The reversal of 6390451449 is 9441540936.

6390451449 is a `hidden beast` number, since 6 + 3 + 90 + 4 + 514 + 49 = 666.

It is not a de Polignac number, because 6390451449 - 2¹⁵ = 6390418681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6390351449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118341667 + ... + 118341720.

It is an arithmetic number, because the mean of its divisors is an integer number (1183416940).

Almost surely, 2^6390451449 is an apocalyptic number.

It is an amenable number.

6390451449 is a deficient number, since it is larger than the sum of its proper divisors (3076884071).

6390451449 is a wasteful number, since it uses less digits than its factorization.

6390451449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236683396 (or 236683390 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6390451449 is about 79940.2992801503. The cubic root of 6390451449 is about 1855.7117312066.

The spelling of 6390451449 in words is "six billion, three hundred ninety million, four hundred fifty-one thousand, four hundred forty-nine".