990970007 has 4 divisors (see below), whose sum is σ = 991858296. Its totient is φ = 990081720.

The previous prime is 990970003. The next prime is 990970021. The reversal of 990970007 is 700079099.

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

It is a cyclic number.

It is not a de Polignac number, because 990970007 - 2² = 990970003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990970003) 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, 442469 + ... + 444702.

It is an arithmetic number, because the mean of its divisors is an integer number (247964574).

Almost surely, 2^990970007 is an apocalyptic number.

990970007 is a deficient number, since it is larger than the sum of its proper divisors (888289).

990970007 is a wasteful number, since it uses less digits than its factorization.

990970007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888288.

The product of its (nonzero) digits is 35721, while the sum is 41.

The square root of 990970007 is about 31479.6760942676. The cubic root of 990970007 is about 996.9808965205.

The spelling of 990970007 in words is "nine hundred ninety million, nine hundred seventy thousand, seven".