890991914 has 4 divisors (see below), whose sum is σ = 1336487874. Its totient is φ = 445495956.

The previous prime is 890991901. The next prime is 890991919. The reversal of 890991914 is 419199098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 419199098 = 2 ⋅209599549.

It can be written as a sum of positive squares in only one way, i.e., 576816289 + 314175625 = 24017^2 + 17725^2 .

It is not an unprimeable number, because it can be changed into a prime (890991919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222747977 + ... + 222747980.

Almost surely, 2^890991914 is an apocalyptic number.

890991914 is a deficient number, since it is larger than the sum of its proper divisors (445495960).

890991914 is a wasteful number, since it uses less digits than its factorization.

890991914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445495959.

The product of its (nonzero) digits is 209952, while the sum is 50.

The square root of 890991914 is about 29849.4876672951. The cubic root of 890991914 is about 962.2573880895.

The spelling of 890991914 in words is "eight hundred ninety million, nine hundred ninety-one thousand, nine hundred fourteen".