899070649 has 4 divisors (see below), whose sum is σ = 928072960. Its totient is φ = 870068340.

The previous prime is 899070647. The next prime is 899070677. The reversal of 899070649 is 946070998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 946070998 = 2 ⋅473035499.

It is a cyclic number.

It is not a de Polignac number, because 899070649 - 2¹ = 899070647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 899070596 and 899070605.

It is not an unprimeable number, because it can be changed into a prime (899070647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14501109 + ... + 14501170.

It is an arithmetic number, because the mean of its divisors is an integer number (232018240).

Almost surely, 2^899070649 is an apocalyptic number.

It is an amenable number.

899070649 is a deficient number, since it is larger than the sum of its proper divisors (29002311).

899070649 is a wasteful number, since it uses less digits than its factorization.

899070649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29002310.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 899070649 is about 29984.5068160208. The cubic root of 899070649 is about 965.1569447726.

The spelling of 899070649 in words is "eight hundred ninety-nine million, seventy thousand, six hundred forty-nine".