736944421 has 4 divisors (see below), whose sum is σ = 737076844. Its totient is φ = 736812000.

The previous prime is 736944413. The next prime is 736944451. The reversal of 736944421 is 124449637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 691111521 + 45832900 = 26289^2 + 6770^2 .

It is a cyclic number.

It is not a de Polignac number, because 736944421 - 2³ = 736944413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (736944401) 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, 57480 + ... + 69121.

It is an arithmetic number, because the mean of its divisors is an integer number (184269211).

Almost surely, 2^736944421 is an apocalyptic number.

It is an amenable number.

736944421 is a deficient number, since it is larger than the sum of its proper divisors (132423).

736944421 is a wasteful number, since it uses less digits than its factorization.

736944421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132422.

The product of its digits is 145152, while the sum is 40.

The square root of 736944421 is about 27146.7202623079. The cubic root of 736944421 is about 903.2575044561.

The spelling of 736944421 in words is "seven hundred thirty-six million, nine hundred forty-four thousand, four hundred twenty-one".