3872403 has 6 divisors (see below), whose sum is σ = 5593484. Its totient is φ = 2581596.

The previous prime is 3872389. The next prime is 3872417. The reversal of 3872403 is 3042783.

It is an interprime number because it is at equal distance from previous prime (3872389) and next prime (3872417).

It is not a de Polignac number, because 3872403 - 2⁴ = 3872387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3872423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215125 + ... + 215142.

Almost surely, 2^3872403 is an apocalyptic number.

3872403 is a deficient number, since it is larger than the sum of its proper divisors (1721081).

3872403 is a wasteful number, since it uses less digits than its factorization.

3872403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430273 (or 430270 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 3872403 is about 1967.8422192849. The cubic root of 3872403 is about 157.0339358938.

Subtracting from 3872403 its product of nonzero digits (4032), we obtain a triangular number (3868371 = T₂₇₈₁).

The spelling of 3872403 in words is "three million, eight hundred seventy-two thousand, four hundred three".