993472779 has 64 divisors (see below), whose sum is σ = 1577676800. Its totient is φ = 550540800.

The previous prime is 993472759. The next prime is 993472783. The reversal of 993472779 is 977274399.

It is not a de Polignac number, because 993472779 - 2⁵ = 993472747 is a prime.

It is a super-2 number, since 2×993472779² = 1973976325227965682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (993472729) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1400877 + ... + 1401585.

It is an arithmetic number, because the mean of its divisors is an integer number (24651200).

Almost surely, 2^993472779 is an apocalyptic number.

993472779 is a deficient number, since it is larger than the sum of its proper divisors (584204021).

993472779 is a wasteful number, since it uses less digits than its factorization.

993472779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its digits is 6001128, while the sum is 57.

The square root of 993472779 is about 31519.4032145280. The cubic root of 993472779 is about 997.8195085796.

The spelling of 993472779 in words is "nine hundred ninety-three million, four hundred seventy-two thousand, seven hundred seventy-nine".