3989542235 has 16 divisors (see below), whose sum is σ = 5793218496. Its totient is φ = 2574763008.

The previous prime is 3989542171. The next prime is 3989542237. The reversal of 3989542235 is 5322459893.

It is a cyclic number.

It is not a de Polignac number, because 3989542235 - 2⁶ = 3989542171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3989542237) 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, 3351962 + ... + 3353151.

It is an arithmetic number, because the mean of its divisors is an integer number (362076156).

Almost surely, 2^3989542235 is an apocalyptic number.

3989542235 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3989542235 is a deficient number, since it is larger than the sum of its proper divisors (1803676261).

3989542235 is a wasteful number, since it uses less digits than its factorization.

3989542235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705142.

The product of its digits is 2332800, while the sum is 50.

The square root of 3989542235 is about 63162.8232032103. The cubic root of 3989542235 is about 1586.0164556875.

The spelling of 3989542235 in words is "three billion, nine hundred eighty-nine million, five hundred forty-two thousand, two hundred thirty-five".