3978099 has 16 divisors (see below), whose sum is σ = 5927040. Its totient is φ = 2637000.

The previous prime is 3978071. The next prime is 3978101. The reversal of 3978099 is 9908793.

It is a happy number.

It is not a de Polignac number, because 3978099 - 2⁹ = 3977587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3978899) 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, 6484 + ... + 7070.

It is an arithmetic number, because the mean of its divisors is an integer number (370440).

Almost surely, 2^3978099 is an apocalyptic number.

3978099 is a deficient number, since it is larger than the sum of its proper divisors (1948941).

3978099 is a wasteful number, since it uses less digits than its factorization.

3978099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 3978099 is about 1994.5172348215. The cubic root of 3978099 is about 158.4498609102.

The spelling of 3978099 in words is "three million, nine hundred seventy-eight thousand, ninety-nine".