1396550438 has 4 divisors (see below), whose sum is σ = 2094825660. Its totient is φ = 698275218.

The previous prime is 1396550437. The next prime is 1396550443. The reversal of 1396550438 is 8340556931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396550437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349137608 + ... + 349137611.

It is an arithmetic number, because the mean of its divisors is an integer number (523706415).

Almost surely, 2^1396550438 is an apocalyptic number.

1396550438 is a deficient number, since it is larger than the sum of its proper divisors (698275222).

1396550438 is an equidigital number, since it uses as much as digits as its factorization.

1396550438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698275221.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 1396550438 is about 37370.4487262329. The cubic root of 1396550438 is about 1117.7693800124.

The spelling of 1396550438 in words is "one billion, three hundred ninety-six million, five hundred fifty thousand, four hundred thirty-eight".