4021294997 has 4 divisors (see below), whose sum is σ = 4060336800. Its totient is φ = 3982253196.

The previous prime is 4021294987. The next prime is 4021295011. The reversal of 4021294997 is 7994921204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4021294997 - 2⁶ = 4021294933 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 (4021294987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19520747 + ... + 19520952.

It is an arithmetic number, because the mean of its divisors is an integer number (1015084200).

Almost surely, 2^4021294997 is an apocalyptic number.

It is an amenable number.

4021294997 is a deficient number, since it is larger than the sum of its proper divisors (39041803).

4021294997 is a wasteful number, since it uses less digits than its factorization.

4021294997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39041802.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 4021294997 is about 63413.6814654377. The cubic root of 4021294997 is about 1590.2130427980.

The spelling of 4021294997 in words is "four billion, twenty-one million, two hundred ninety-four thousand, nine hundred ninety-seven".