2001976397 has 8 divisors (see below), whose sum is σ = 2006899776. Its totient is φ = 1997060832.

The previous prime is 2001976391. The next prime is 2001976433. The reversal of 2001976397 is 7936791002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2001976397 - 2⁴ = 2001976381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001976391) 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 in 7 ways as a sum of consecutive naturals, for example, 1145078 + ... + 1146824.

It is an arithmetic number, because the mean of its divisors is an integer number (250862472).

Almost surely, 2^2001976397 is an apocalyptic number.

It is an amenable number.

2001976397 is a deficient number, since it is larger than the sum of its proper divisors (4923379).

2001976397 is a wasteful number, since it uses less digits than its factorization.

2001976397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 2001976397 is about 44743.4508839003. The cubic root of 2001976397 is about 1260.3359306272.

The spelling of 2001976397 in words is "two billion, one million, nine hundred seventy-six thousand, three hundred ninety-seven".