387490501 has 4 divisors (see below), whose sum is σ = 396501952. Its totient is φ = 378479052.

The previous prime is 387490471. The next prime is 387490507. The reversal of 387490501 is 105094783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 387490501 - 2⁹ = 387489989 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387490507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4505661 + ... + 4505746.

It is an arithmetic number, because the mean of its divisors is an integer number (99125488).

Almost surely, 2^387490501 is an apocalyptic number.

It is an amenable number.

387490501 is a deficient number, since it is larger than the sum of its proper divisors (9011451).

387490501 is an equidigital number, since it uses as much as digits as its factorization.

387490501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011450.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 387490501 is about 19684.7784087096. The cubic root of 387490501 is about 729.0439106649.

The spelling of 387490501 in words is "three hundred eighty-seven million, four hundred ninety thousand, five hundred one".