396878503 has 4 divisors (see below), whose sum is σ = 453575440. Its totient is φ = 340181568.

The previous prime is 396878477. The next prime is 396878513. The reversal of 396878503 is 305878693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 396878503 - 2¹³ = 396870311 is a prime.

It is a super-2 number, since 2×396878503² = 315025092287042018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396878513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28348458 + ... + 28348471.

It is an arithmetic number, because the mean of its divisors is an integer number (113393860).

Almost surely, 2^396878503 is an apocalyptic number.

396878503 is a deficient number, since it is larger than the sum of its proper divisors (56696937).

396878503 is an equidigital number, since it uses as much as digits as its factorization.

396878503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56696936.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 396878503 is about 19921.8097320499. The cubic root of 396878503 is about 734.8846768638.

The spelling of 396878503 in words is "three hundred ninety-six million, eight hundred seventy-eight thousand, five hundred three".