694007489 has 4 divisors (see below), whose sum is σ = 793151424. Its totient is φ = 594863556.

The previous prime is 694007453. The next prime is 694007491. The reversal of 694007489 is 984700496.

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 694007489 - 2⁸ = 694007233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694007429) 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, 49571957 + ... + 49571970.

It is an arithmetic number, because the mean of its divisors is an integer number (198287856).

Almost surely, 2^694007489 is an apocalyptic number.

It is an amenable number.

694007489 is a deficient number, since it is larger than the sum of its proper divisors (99143935).

694007489 is an equidigital number, since it uses as much as digits as its factorization.

694007489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99143934.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 694007489 is about 26344.0218835318. The cubic root of 694007489 is about 885.3630349041.

It can be divided in two parts, 694007 and 489, that added together give a palindrome (694496).

The spelling of 694007489 in words is "six hundred ninety-four million, seven thousand, four hundred eighty-nine".