3898407 has 8 divisors (see below), whose sum is σ = 5225584. Its totient is φ = 2585088.

The previous prime is 3898393. The next prime is 3898409. The reversal of 3898407 is 7048983.

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

It is not a de Polignac number, because 3898407 - 2¹⁸ = 3636263 is a prime.

It is a Duffinian number.

3898407 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898409) 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, 2788 + ... + 3945.

It is an arithmetic number, because the mean of its divisors is an integer number (653198).

Almost surely, 2^3898407 is an apocalyptic number.

3898407 is a deficient number, since it is larger than the sum of its proper divisors (1327177).

3898407 is a wasteful number, since it uses less digits than its factorization.

3898407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6929.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3898407 is about 1974.4384011663. The cubic root of 3898407 is about 157.3846572997.

The spelling of 3898407 in words is "three million, eight hundred ninety-eight thousand, four hundred seven".