438747394 has 16 divisors (see below), whose sum is σ = 666767160. Its totient is φ = 216501120.

The previous prime is 438747391. The next prime is 438747403. The reversal of 438747394 is 493747834.

It can be written as a sum of positive squares in 4 ways, for example, as 59861169 + 378886225 = 7737^2 + 19465^2 .

It is not an unprimeable number, because it can be changed into a prime (438747391) 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, 107104 + ... + 111124.

Almost surely, 2^438747394 is an apocalyptic number.

438747394 is a deficient number, since it is larger than the sum of its proper divisors (228019766).

438747394 is a wasteful number, since it uses less digits than its factorization.

438747394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725.

The product of its digits is 2032128, while the sum is 49.

The square root of 438747394 is about 20946.2978590490. The cubic root of 438747394 is about 759.8680484215.

The spelling of 438747394 in words is "four hundred thirty-eight million, seven hundred forty-seven thousand, three hundred ninety-four".