387469999 has 12 divisors (see below), whose sum is σ = 451366128. Its totient is φ = 331648800.

The previous prime is 387469997. The next prime is 387470009. The reversal of 387469999 is 999964783.

It is not a de Polignac number, because 387469999 - 2¹ = 387469997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387469999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387469991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32094 + ... + 42484.

It is an arithmetic number, because the mean of its divisors is an integer number (37613844).

Almost surely, 2^387469999 is an apocalyptic number.

387469999 is a deficient number, since it is larger than the sum of its proper divisors (63896129).

387469999 is a wasteful number, since it uses less digits than its factorization.

387469999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11166 (or 11159 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 64.

The square root of 387469999 is about 19684.2576441175. The cubic root of 387469999 is about 729.0310526105.

The spelling of 387469999 in words is "three hundred eighty-seven million, four hundred sixty-nine thousand, nine hundred ninety-nine".