3991022302 has 4 divisors (see below), whose sum is σ = 5986533456. Its totient is φ = 1995511150.

The previous prime is 3991022297. The next prime is 3991022309. The reversal of 3991022302 is 2032201993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2032201993 = 31 ⋅65554903.

It is a super-2 number, since 2×3991022302² = 31856518030122758408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3991022309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997755574 + ... + 997755577.

It is an arithmetic number, because the mean of its divisors is an integer number (1496633364).

Almost surely, 2^3991022302 is an apocalyptic number.

3991022302 is a deficient number, since it is larger than the sum of its proper divisors (1995511154).

3991022302 is a wasteful number, since it uses less digits than its factorization.

3991022302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995511153.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 3991022302 is about 63174.5383995799. The cubic root of 3991022302 is about 1586.2125617613.

The spelling of 3991022302 in words is "three billion, nine hundred ninety-one million, twenty-two thousand, three hundred two".