1439137390 has 16 divisors (see below), whose sum is σ = 2597918832. Its totient is φ = 573994624.

The previous prime is 1439137369. The next prime is 1439137409. The reversal of 1439137390 is 937319341.

It is a super-2 number, since 2×1439137390² = 4142232854592024200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203899 + ... + 210838.

It is an arithmetic number, because the mean of its divisors is an integer number (162369927).

Almost surely, 2^1439137390 is an apocalyptic number.

1439137390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1439137390 is a deficient number, since it is larger than the sum of its proper divisors (1158781442).

1439137390 is a wasteful number, since it uses less digits than its factorization.

1439137390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415091.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 1439137390 is about 37935.9643346522. The cubic root of 1439137390 is about 1129.0177043153.

The spelling of 1439137390 in words is "one billion, four hundred thirty-nine million, one hundred thirty-seven thousand, three hundred ninety".