102990477 has 8 divisors (see below), whose sum is σ = 137400480. Its totient is φ = 68620400.

The previous prime is 102990451. The next prime is 102990487. The reversal of 102990477 is 774099201.

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

It is a cyclic number.

It is not a de Polignac number, because 102990477 - 2¹⁴ = 102974093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102990487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3327 + ... + 14732.

It is an arithmetic number, because the mean of its divisors is an integer number (17175060).

Almost surely, 2^102990477 is an apocalyptic number.

It is an amenable number.

102990477 is a deficient number, since it is larger than the sum of its proper divisors (34410003).

102990477 is a wasteful number, since it uses less digits than its factorization.

102990477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19963.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 102990477 is about 10148.4223897116. The cubic root of 102990477 is about 468.7403678732.

The spelling of 102990477 in words is "one hundred two million, nine hundred ninety thousand, four hundred seventy-seven".