5401897988 has 12 divisors (see below), whose sum is σ = 9453852492. Its totient is φ = 2700797280.

The previous prime is 5401897939. The next prime is 5401897993. The reversal of 5401897988 is 8897981045.

It can be written as a sum of positive squares in 2 ways, for example, as 3120116164 + 2281781824 = 55858^2 + 47768^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90506 + ... + 137822.

It is an arithmetic number, because the mean of its divisors is an integer number (787821041).

Almost surely, 2^5401897988 is an apocalyptic number.

It is an amenable number.

5401897988 is a deficient number, since it is larger than the sum of its proper divisors (4051954504).

5401897988 is a wasteful number, since it uses less digits than its factorization.

5401897988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75862 (or 75860 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 59.

The square root of 5401897988 is about 73497.6053215341. The cubic root of 5401897988 is about 1754.6161651684.

The spelling of 5401897988 in words is "five billion, four hundred one million, eight hundred ninety-seven thousand, nine hundred eighty-eight".