977013121 has 8 divisors (see below), whose sum is σ = 1116928640. Its totient is φ = 837183168.

The previous prime is 977013101. The next prime is 977013127. The reversal of 977013121 is 121310779.

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 977013121 - 2¹⁵ = 976980353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (977013127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5305 + ... + 44521.

It is an arithmetic number, because the mean of its divisors is an integer number (139616080).

Almost surely, 2^977013121 is an apocalyptic number.

It is an amenable number.

977013121 is a deficient number, since it is larger than the sum of its proper divisors (139915519).

977013121 is a wasteful number, since it uses less digits than its factorization.

977013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42783.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 977013121 is about 31257.2091044610. The cubic root of 977013121 is about 992.2782348142.

The spelling of 977013121 in words is "nine hundred seventy-seven million, thirteen thousand, one hundred twenty-one".