3972249899 has 8 divisors (see below), whose sum is σ = 4012120320. Its totient is φ = 3932404776.

The previous prime is 3972249859. The next prime is 3972249901. The reversal of 3972249899 is 9989422793.

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 3972249899 - 2⁸ = 3972249643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3972249859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551282 + ... + 558440.

It is an arithmetic number, because the mean of its divisors is an integer number (501515040).

Almost surely, 2^3972249899 is an apocalyptic number.

3972249899 is a deficient number, since it is larger than the sum of its proper divisors (39870421).

3972249899 is a wasteful number, since it uses less digits than its factorization.

3972249899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12649.

The product of its digits is 17635968, while the sum is 62.

The square root of 3972249899 is about 63025.7875714378. The cubic root of 3972249899 is about 1583.7216518680.

The spelling of 3972249899 in words is "three billion, nine hundred seventy-two million, two hundred forty-nine thousand, eight hundred ninety-nine".