387749043 has 24 divisors (see below), whose sum is σ = 611869440. Its totient is φ = 234664560.

The previous prime is 387749027. The next prime is 387749069. The reversal of 387749043 is 340947783.

It is a happy number.

It is not a de Polignac number, because 387749043 - 2⁴ = 387749027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387749043.

It is not an unprimeable number, because it can be changed into a prime (387849043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79098 + ... + 83856.

It is an arithmetic number, because the mean of its divisors is an integer number (25494560).

Almost surely, 2^387749043 is an apocalyptic number.

387749043 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

387749043 is a deficient number, since it is larger than the sum of its proper divisors (224120397).

387749043 is a wasteful number, since it uses less digits than its factorization.

387749043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599 (or 5596 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 387749043 is about 19691.3443675134. The cubic root of 387749043 is about 729.2060192109.

The spelling of 387749043 in words is "three hundred eighty-seven million, seven hundred forty-nine thousand, forty-three".