977342405 has 16 divisors (see below), whose sum is σ = 1271516400. Its totient is φ = 716878848.

The previous prime is 977342339. The next prime is 977342411. The reversal of 977342405 is 504243779.

It can be written as a sum of positive squares in 8 ways, for example, as 545409316 + 431933089 = 23354^2 + 20783^2 .

It is a cyclic number.

It is not a de Polignac number, because 977342405 - 2¹⁰ = 977341381 is a prime.

It is a super-2 number, since 2×977342405² = 1910396353222368050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40772 + ... + 60141.

It is an arithmetic number, because the mean of its divisors is an integer number (79469775).

Almost surely, 2^977342405 is an apocalyptic number.

It is an amenable number.

977342405 is a deficient number, since it is larger than the sum of its proper divisors (294173995).

977342405 is a wasteful number, since it uses less digits than its factorization.

977342405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101080.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 977342405 is about 31262.4759895949. The cubic root of 977342405 is about 992.3896985666.

The spelling of 977342405 in words is "nine hundred seventy-seven million, three hundred forty-two thousand, four hundred five".