3997889454 has 32 divisors (see below), whose sum is σ = 8623671840. Its totient is φ = 1228286592.

The previous prime is 3997889443. The next prime is 3997889491. The reversal of 3997889454 is 4549887993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14952 + ... + 90660.

It is an arithmetic number, because the mean of its divisors is an integer number (269489745).

Almost surely, 2^3997889454 is an apocalyptic number.

3997889454 is an abundant number, since it is smaller than the sum of its proper divisors (4625782386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3997889454 is a wasteful number, since it uses less digits than its factorization.

3997889454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76404.

The product of its digits is 78382080, while the sum is 66.

The square root of 3997889454 is about 63228.8656706729. The cubic root of 3997889454 is about 1587.1218126051.

The spelling of 3997889454 in words is "three billion, nine hundred ninety-seven million, eight hundred eighty-nine thousand, four hundred fifty-four".