99920629 has 4 divisors (see below), whose sum is σ = 101124576. Its totient is φ = 98716684.

The previous prime is 99920603. The next prime is 99920641. The reversal of 99920629 is 92602999.

99920629 = T₁₅₁₀ + T₁₅₁₁ + ... + T₁₅₉₂.

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.

It is a cyclic number.

It is not a de Polignac number, because 99920629 - 2²¹ = 97823477 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 (99920659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601849 + ... + 602014.

It is an arithmetic number, because the mean of its divisors is an integer number (25281144).

Almost surely, 2^99920629 is an apocalyptic number.

It is an amenable number.

99920629 is a deficient number, since it is larger than the sum of its proper divisors (1203947).

99920629 is a wasteful number, since it uses less digits than its factorization.

99920629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203946.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 99920629 is about 9996.0306622179. The cubic root of 99920629 is about 464.0360483413.

The spelling of 99920629 in words is "ninety-nine million, nine hundred twenty thousand, six hundred twenty-nine".