42997089 has 4 divisors (see below), whose sum is σ = 57329456. Its totient is φ = 28664724.

The previous prime is 42997061. The next prime is 42997091. The reversal of 42997089 is 98079924.

It is a happy number.

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 not a de Polignac number, because 42997089 - 2¹¹ = 42995041 is a prime.

It is a super-3 number, since 3×42997089³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42997289) 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, 7166179 + ... + 7166184.

It is an arithmetic number, because the mean of its divisors is an integer number (14332364).

Almost surely, 2^42997089 is an apocalyptic number.

It is an amenable number.

42997089 is a deficient number, since it is larger than the sum of its proper divisors (14332367).

42997089 is a wasteful number, since it uses less digits than its factorization.

42997089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14332366.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 42997089 is about 6557.2165588762. The cubic root of 42997089 is about 350.3319001302.

The spelling of 42997089 in words is "forty-two million, nine hundred ninety-seven thousand, eighty-nine".