3897856007 has 2 divisors, whose sum is σ = 3897856008. Its totient is φ = 3897856006.

The previous prime is 3897855919. The next prime is 3897856031. The reversal of 3897856007 is 7006587983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3897856007 - 2¹⁴ = 3897839623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3897856007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3897856087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948928003 + 1948928004.

It is an arithmetic number, because the mean of its divisors is an integer number (1948928004).

Almost surely, 2^3897856007 is an apocalyptic number.

3897856007 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897856007 is an equidigital number, since it uses as much as digits as its factorization.

3897856007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 3897856007 is about 62432.8119421190. The cubic root of 3897856007 is about 1573.7724214012.

The spelling of 3897856007 in words is "three billion, eight hundred ninety-seven million, eight hundred fifty-six thousand, seven".