3898731 has 16 divisors (see below), whose sum is σ = 5513760. Its totient is φ = 2446080.

The previous prime is 3898717. The next prime is 3898747. The reversal of 3898731 is 1378983.

It is not a de Polignac number, because 3898731 - 2¹⁵ = 3865963 is a prime.

It is a super-2 number, since 2×3898731² = 30400206820722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3898731.

It is not an unprimeable number, because it can be changed into a prime (3898751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3021 + ... + 4113.

It is an arithmetic number, because the mean of its divisors is an integer number (344610).

Almost surely, 2^3898731 is an apocalyptic number.

3898731 is a deficient number, since it is larger than the sum of its proper divisors (1615029).

3898731 is a wasteful number, since it uses less digits than its factorization.

3898731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166.

The product of its digits is 36288, while the sum is 39.

The square root of 3898731 is about 1974.5204481089. The cubic root of 3898731 is about 157.3890173042.

The spelling of 3898731 in words is "three million, eight hundred ninety-eight thousand, seven hundred thirty-one".