745977444 has 24 divisors (see below), whose sum is σ = 1746816288. Its totient is φ = 247773120.

The previous prime is 745977443. The next prime is 745977451. The reversal of 745977444 is 444779547.

It is not an unprimeable number, because it can be changed into a prime (745977443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107242 + ... + 113985.

It is an arithmetic number, because the mean of its divisors is an integer number (72784012).

Almost surely, 2^745977444 is an apocalyptic number.

It is an amenable number.

745977444 is an abundant number, since it is smaller than the sum of its proper divisors (1000838844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745977444 is a wasteful number, since it uses less digits than its factorization.

745977444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221515 (or 221513 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 51.

The square root of 745977444 is about 27312.5876474566. The cubic root of 745977444 is about 906.9330572361.

The spelling of 745977444 in words is "seven hundred forty-five million, nine hundred seventy-seven thousand, four hundred forty-four".