1396427590 has 32 divisors (see below), whose sum is σ = 2529156960. Its totient is φ = 555120384.

The previous prime is 1396427587. The next prime is 1396427639. The reversal of 1396427590 is 957246931.

It is a happy number.

It is a super-2 number, since 2×1396427590² = 3900020028226416200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1396427590.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2062332 + ... + 2063008.

It is an arithmetic number, because the mean of its divisors is an integer number (79036155).

Almost surely, 2^1396427590 is an apocalyptic number.

1396427590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1396427590 is a deficient number, since it is larger than the sum of its proper divisors (1132729370).

1396427590 is a wasteful number, since it uses less digits than its factorization.

1396427590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 1396427590 is about 37368.8050384274. The cubic root of 1396427590 is about 1117.7366040726.

The spelling of 1396427590 in words is "one billion, three hundred ninety-six million, four hundred twenty-seven thousand, five hundred ninety".