398372501 has 8 divisors (see below), whose sum is σ = 402878784. Its totient is φ = 393874560.

The previous prime is 398372497. The next prime is 398372503. The reversal of 398372501 is 105273893.

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

It is a cyclic number.

It is not a de Polignac number, because 398372501 - 2² = 398372497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398372503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176486 + ... + 178728.

It is an arithmetic number, because the mean of its divisors is an integer number (50359848).

Almost surely, 2^398372501 is an apocalyptic number.

It is an amenable number.

398372501 is a deficient number, since it is larger than the sum of its proper divisors (4506283).

398372501 is a wasteful number, since it uses less digits than its factorization.

398372501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 398372501 is about 19959.2710538236. The cubic root of 398372501 is about 735.8056484360.

The spelling of 398372501 in words is "three hundred ninety-eight million, three hundred seventy-two thousand, five hundred one".