153999994 has 16 divisors (see below), whose sum is σ = 240592896. Its totient is φ = 73861200.

The previous prime is 153999983. The next prime is 154000001. The reversal of 153999994 is 499999351.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9402 + ... + 19909.

It is an arithmetic number, because the mean of its divisors is an integer number (15037056).

Almost surely, 2^153999994 is an apocalyptic number.

153999994 is a deficient number, since it is larger than the sum of its proper divisors (86592902).

153999994 is a wasteful number, since it uses less digits than its factorization.

153999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29421.

The product of its digits is 3542940, while the sum is 58.

The square root of 153999994 is about 12409.6734042440. The cubic root of 153999994 is about 536.0108341354.

The spelling of 153999994 in words is "one hundred fifty-three million, nine hundred ninety-nine thousand, nine hundred ninety-four".