1394240534 has 4 divisors (see below), whose sum is σ = 2091360804. Its totient is φ = 697120266.

The previous prime is 1394240527. The next prime is 1394240537. The reversal of 1394240534 is 4350424931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4350424931 = 89 ⋅48881179.

It is a junction number, because it is equal to n+sod(n) for n = 1394240494 and 1394240503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394240537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348560132 + ... + 348560135.

It is an arithmetic number, because the mean of its divisors is an integer number (522840201).

Almost surely, 2^1394240534 is an apocalyptic number.

1394240534 is a deficient number, since it is larger than the sum of its proper divisors (697120270).

1394240534 is an equidigital number, since it uses as much as digits as its factorization.

1394240534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697120269.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1394240534 is about 37339.5304469673. The cubic root of 1394240534 is about 1117.1527738575.

The spelling of 1394240534 in words is "one billion, three hundred ninety-four million, two hundred forty thousand, five hundred thirty-four".