1390239010 has 32 divisors (see below), whose sum is σ = 2555410032. Its totient is φ = 544435200.

The previous prime is 1390238981. The next prime is 1390239013. The reversal of 1390239010 is 109320931.

It can be written as a sum of positive squares in 8 ways, for example, as 936421201 + 453817809 = 30601^2 + 21303^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1390239010.

It is not an unprimeable number, because it can be changed into a prime (1390239013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93060 + ... + 106960.

Almost surely, 2^1390239010 is an apocalyptic number.

1390239010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390239010 is a deficient number, since it is larger than the sum of its proper divisors (1165171022).

1390239010 is a wasteful number, since it uses less digits than its factorization.

1390239010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14118.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 1390239010 is about 37285.9090005863. The cubic root of 1390239010 is about 1116.0829926119.

Adding to 1390239010 its reverse (109320931), we get a palindrome (1499559941).

The spelling of 1390239010 in words is "one billion, three hundred ninety million, two hundred thirty-nine thousand, ten".