4000451091 has 48 divisors (see below), whose sum is σ = 6700173984. Its totient is φ = 2104413696.

The previous prime is 4000451069. The next prime is 4000451113. The reversal of 4000451091 is 1901540004.

It is an interprime number because it is at equal distance from previous prime (4000451069) and next prime (4000451113).

It is not a de Polignac number, because 4000451091 - 2⁷ = 4000450963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000451041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 756031 + ... + 761303.

It is an arithmetic number, because the mean of its divisors is an integer number (139586958).

Almost surely, 2^4000451091 is an apocalyptic number.

4000451091 is a deficient number, since it is larger than the sum of its proper divisors (2699722893).

4000451091 is a wasteful number, since it uses less digits than its factorization.

4000451091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700 (or 5693 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 4000451091 is about 63249.1192903111. The cubic root of 4000451091 is about 1587.4607215859.

Adding to 4000451091 its reverse (1901540004), we get a palindrome (5901991095).

The spelling of 4000451091 in words is "four billion, four hundred fifty-one thousand, ninety-one".