990148773 has 8 divisors (see below), whose sum is σ = 1362785536. Its totient is φ = 638805600.

The previous prime is 990148771. The next prime is 990148787. The reversal of 990148773 is 377841099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 990148773 - 2¹ = 990148771 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 (990148771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5323288 + ... + 5323473.

It is an arithmetic number, because the mean of its divisors is an integer number (170348192).

Almost surely, 2^990148773 is an apocalyptic number.

990148773 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

990148773 is a deficient number, since it is larger than the sum of its proper divisors (372636763).

990148773 is a wasteful number, since it uses less digits than its factorization.

990148773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10646795.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 990148773 is about 31466.6295144555. The cubic root of 990148773 is about 996.7054152984.

The spelling of 990148773 in words is "nine hundred ninety million, one hundred forty-eight thousand, seven hundred seventy-three".