612444769 has 4 divisors (see below), whose sum is σ = 614885040. Its totient is φ = 610004500.

The previous prime is 612444761. The next prime is 612444779. The reversal of 612444769 is 967444216.

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 a cyclic number.

It is not a de Polignac number, because 612444769 - 2³ = 612444761 is a prime.

It is a super-2 number, since 2×612444769² = 750177190150926722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612444761) 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, 1219759 + ... + 1220260.

It is an arithmetic number, because the mean of its divisors is an integer number (153721260).

Almost surely, 2^612444769 is an apocalyptic number.

It is an amenable number.

612444769 is a deficient number, since it is larger than the sum of its proper divisors (2440271).

612444769 is a wasteful number, since it uses less digits than its factorization.

612444769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440270.

The product of its digits is 290304, while the sum is 43.

The square root of 612444769 is about 24747.6214816697. The cubic root of 612444769 is about 849.2240988741.

The spelling of 612444769 in words is "six hundred twelve million, four hundred forty-four thousand, seven hundred sixty-nine".