3977139 has 16 divisors (see below), whose sum is σ = 5467904. Its totient is φ = 2570400.

The previous prime is 3977117. The next prime is 3977153. The reversal of 3977139 is 9317793.

It is not a de Polignac number, because 3977139 - 2⁵ = 3977107 is a prime.

It is a Duffinian number.

3977139 is an undulating number in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 3977097 and 3977106.

It is not an unprimeable number, because it can be changed into a prime (3977159) 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, 18744 + ... + 18954.

It is an arithmetic number, because the mean of its divisors is an integer number (341744).

Almost surely, 2^3977139 is an apocalyptic number.

3977139 is a deficient number, since it is larger than the sum of its proper divisors (1490765).

3977139 is a wasteful number, since it uses less digits than its factorization.

3977139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378.

The product of its digits is 35721, while the sum is 39.

The square root of 3977139 is about 1994.2765605602. The cubic root of 3977139 is about 158.4371141096.

The spelling of 3977139 in words is "three million, nine hundred seventy-seven thousand, one hundred thirty-nine".