121649396 has 24 divisors (see below), whose sum is σ = 233089920. Its totient is φ = 55092800.

The previous prime is 121649387. The next prime is 121649401. The reversal of 121649396 is 693946121.

It is a super-3 number, since 3×121649396³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

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, 7445 + ... + 17283.

It is an arithmetic number, because the mean of its divisors is an integer number (9712080).

Almost surely, 2^121649396 is an apocalyptic number.

It is an amenable number.

121649396 is a deficient number, since it is larger than the sum of its proper divisors (111440524).

121649396 is a wasteful number, since it uses less digits than its factorization.

121649396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135 (or 10133 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 121649396 is about 11029.4785008177. The cubic root of 121649396 is about 495.4920061312.

The spelling of 121649396 in words is "one hundred twenty-one million, six hundred forty-nine thousand, three hundred ninety-six".