1439040898 has 4 divisors (see below), whose sum is σ = 2158561350. Its totient is φ = 719520448.

The previous prime is 1439040893. The next prime is 1439040899. The reversal of 1439040898 is 8980409341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1219615929 + 219424969 = 34923^2 + 14813^2 .

It is a super-2 number, since 2×1439040898² = 4141677412233292808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1439040893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359760223 + ... + 359760226.

Almost surely, 2^1439040898 is an apocalyptic number.

1439040898 is a deficient number, since it is larger than the sum of its proper divisors (719520452).

1439040898 is an equidigital number, since it uses as much as digits as its factorization.

1439040898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719520451.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1439040898 is about 37934.6925386249. The cubic root of 1439040898 is about 1128.9924707710.

The spelling of 1439040898 in words is "one billion, four hundred thirty-nine million, forty thousand, eight hundred ninety-eight".