387421449 has 16 divisors (see below), whose sum is σ = 549312192. Its totient is φ = 242037248.

The previous prime is 387421429. The next prime is 387421459. The reversal of 387421449 is 944124783.

It is a cyclic number.

It is not a de Polignac number, because 387421449 - 2⁵ = 387421417 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 387421449.

It is not an unprimeable number, because it can be changed into a prime (387421409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4419 + ... + 28184.

It is an arithmetic number, because the mean of its divisors is an integer number (34332012).

Almost surely, 2^387421449 is an apocalyptic number.

It is an amenable number.

387421449 is a deficient number, since it is larger than the sum of its proper divisors (161890743).

387421449 is a wasteful number, since it uses less digits than its factorization.

387421449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32856.

The product of its digits is 193536, while the sum is 42.

The square root of 387421449 is about 19683.0243865113. The cubic root of 387421449 is about 729.0006021360. Note that the first 3 decimals are identical.

The spelling of 387421449 in words is "three hundred eighty-seven million, four hundred twenty-one thousand, four hundred forty-nine".