387928401 has 8 divisors (see below), whose sum is σ = 591129024. Its totient is φ = 221673360.

The previous prime is 387928381. The next prime is 387928421. The reversal of 387928401 is 104829783.

It is an interprime number because it is at equal distance from previous prime (387928381) and next prime (387928421).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 387928401 - 2⁵ = 387928369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (387928421) 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, 9236370 + ... + 9236411.

It is an arithmetic number, because the mean of its divisors is an integer number (73891128).

Almost surely, 2^387928401 is an apocalyptic number.

It is an amenable number.

387928401 is a deficient number, since it is larger than the sum of its proper divisors (203200623).

387928401 is a wasteful number, since it uses less digits than its factorization.

387928401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18472791.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 387928401 is about 19695.8980754877. The cubic root of 387928401 is about 729.3184362280.

The spelling of 387928401 in words is "three hundred eighty-seven million, nine hundred twenty-eight thousand, four hundred one".