153994990 has 8 divisors (see below), whose sum is σ = 277191000. Its totient is φ = 61597992.

The previous prime is 153994961. The next prime is 153995029. The reversal of 153994990 is 99499351.

153994990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7699740 + ... + 7699759.

It is an arithmetic number, because the mean of its divisors is an integer number (34648875).

Almost surely, 2^153994990 is an apocalyptic number.

153994990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

153994990 is a deficient number, since it is larger than the sum of its proper divisors (123196010).

153994990 is a wasteful number, since it uses less digits than its factorization.

153994990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15399506.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 153994990 is about 12409.4717856966. The cubic root of 153994990 is about 536.0050284484.

The spelling of 153994990 in words is "one hundred fifty-three million, nine hundred ninety-four thousand, nine hundred ninety".