1396628790 has 16 divisors (see below), whose sum is σ = 3351909168. Its totient is φ = 372434336.

The previous prime is 1396628789. The next prime is 1396628791. The reversal of 1396628790 is 978266931.

It is an interprime number because it is at equal distance from previous prime (1396628789) and next prime (1396628791).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396628791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23277117 + ... + 23277176.

It is an arithmetic number, because the mean of its divisors is an integer number (209494323).

Almost surely, 2^1396628790 is an apocalyptic number.

1396628790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1396628790 is an abundant number, since it is smaller than the sum of its proper divisors (1955280378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1396628790 is a wasteful number, since it uses less digits than its factorization.

1396628790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46554303.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 1396628790 is about 37371.4970264773. The cubic root of 1396628790 is about 1117.7902833817.

The spelling of 1396628790 in words is "one billion, three hundred ninety-six million, six hundred twenty-eight thousand, seven hundred ninety".