948820997 has 4 divisors (see below), whose sum is σ = 949131840. Its totient is φ = 948510156.

The previous prime is 948820981. The next prime is 948821009. The reversal of 948820997 is 799028849.

It is a happy number.

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: 799028849 = 17 ⋅47001697.

It is a cyclic number.

It is not a de Polignac number, because 948820997 - 2⁴ = 948820981 is a prime.

It is a super-2 number, since 2×948820997² = 1800522568696148018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948820907) 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, 150797 + ... + 156962.

It is an arithmetic number, because the mean of its divisors is an integer number (237282960).

Almost surely, 2^948820997 is an apocalyptic number.

It is an amenable number.

948820997 is a deficient number, since it is larger than the sum of its proper divisors (310843).

948820997 is a wasteful number, since it uses less digits than its factorization.

948820997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310842.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 948820997 is about 30802.9381228480. The cubic root of 948820997 is about 982.6407318474.

The spelling of 948820997 in words is "nine hundred forty-eight million, eight hundred twenty thousand, nine hundred ninety-seven".